Back in the day, we took typing classes. And the first thing we learned was that F and J are the “home keys,” where you should place your index fingers.

If you type while looking at the screen (which you can do if you took typing classes!), those raised bumps will help you find “home” without having to look down.

How did we get to be today years old before finding out that you can unroll and orange?!

Frankly, we never thought of them as rolled up to begin with, but apparently, you can cut off the top and bottom, make a slit in the side, and become a fruit magician!

We are shook.

Who knew Bic was trying to save our lives all these years?

And let’s face it, it’s not just small children who chew on those caps.

We tend not to put the whole thing in our mouths, but we do chew pretty absentmindedly.

Converse are so ubiquitous today and yet few of us have ever really thought about why they have those extra holes on the sides.

It turns out they’re not just for ventilation but to allow you to keep them on your feet more tightly.

Basketball players used to use them to keep their shoes tight.

It turns out that these are a throwback to the days when military men used their coats as blankets.

The half-belt held the extra material during the daytime and, obviously, the coats used to be more oversized.

We didn’t keep the extra material, but for some reason, the half-belt remains.

The lash tab (also called pig’s snout because of its shape). It is designed to hang #carabiners, #ropes or tie the material when the backpack has not room. As an alternative to the leather version, they can also be made of plastic or rubber to last longer and be water-resistant.⁠

People either roll their eyes because they’ve known this all their lives or have their minds utterly blown.

But it turns out you can use a soda can tab to hold your straw in place so the bubbles don’t push it up and out.

To be fair, this isn’t how the people who bag our groceries use carts? How could we have known to use them in any other way?

However, it is really helpful because we hate having to untie our plastic bags when people knot them to keep things from falling out.

And this seems like a great way to keep from smashing your bread and eggs.

Many fine pieces of clothing come with a tiny bit of fabric. Because so many items come with extra buttons, people assume this fabric is for repairs.

But it’s actually for testing the color-fastness of the fabric before you go to wash it, just in case a detergent or stain remover may ruin the whole garment.

Pasta spoons have a hole on the cradle to help you measure out a single portion of spaghetti.

We’re a little bummed about that because we like our portions big, but that would definitely explain why our diet isn’t going well!

It turns out the shape of a beer bottle is designed to encourage you to hold it at the top so your body heat won’t warm up your beer.

That is, if you take that long to drink it.

(Please drink responsibly.)

Have you ever noticed the tiny 24m, 12m, or 6m symbol on shampoo, lotion, and makeup bottles?

That’s an indicator of how many months you can count on the product to be for once it is open.

If you ever wondered why there’s more to them than meets the eye, it turns out that plastic lids double as coasters.

They’re made to hug the base of your cup and you’ll see they’re manufactured to be the perfect size.

The same goes for Starbucks’ hot beverage lids!

Ok, so we knew most of these, but this one is new to us.

Bread has different colored tags because the color of the tag tells you the day of the week on which the loaf was baked.

USUALLY, the store’s “code” is just alphabetical order – blue, green, red, white, yellow. So blue is Monday, green is Tuesday, etc. Baking on Sundays isn’t common.

But that’s not always the case, so you may need to investigate further.

Technically, you’ll want to point your spoon over the pot if you’re cooking something drippy, but this is a good example of how your pot handle can be used to hold your spoon.

It comes in handy if you don’t have a spoon holder off to the side and leaving it in the pan could burn you.

Some people will try to put a key or a condom in it – and technically you can use it for whatever you want.

But the original purpose of the tiny 5th pocket in blue jeans was to hold a pocket watch.

Well that explains why some jeans with strong-looking rivets tend to be more expensive.

Turns out they’re likely to stay together much longer.

But in today’s day and age, we’re stretching our jeans in slightly different ways and places.

Well, we didn’t realize there was a right way to eat Chinese food.

But as it turns out, we don’t even need to get out extra plates for our takeout.

The containers ARE plates.

While some will tell you they serve no purpose other than to hold the seams together, others insist that sailors used to have poms on their hats to keep them from hitting their heads when they stood up.

It’s just not the kind of hat we think of when we think “protective headgear.”

We KNEW they had to serve a purpose. Otherwise, why use the extra material?

Those little flaps on the side of children’s juice boxes help kids hold the box properly and avoid spills.

The metal tab on your tape measure has two useful purposes.

The wide hole is designed to hook over a nail head so you can hold the tape in place while you make markings.

It also has a serrated edge on one side that you can gently press and mark where you want the end of your measurement to be on a board.

Walgreens and other pharmacies have childproof caps that only need to be opened once if you don’t have kids around.

Particularly useful to people with arthritis, the raised cap can be used to seal the bottle with the cap upside down so you don’t have to push and twist every day.

We kind of hope you know this already, but in case you don’t: most plastic containers have a triangle with a number inside printed on them. The number is a reference to how safe the plastic is to recycle. Some towns will only take items with certain numbers.

The numbers run from 1-7.

And you’ll also want to make sure anything you store food in has a 1, 2, or 4. Those are the food-safe plastic numbers.

It’s amazing how we can own a car for years and still pull up to the gas pump on the wrong side of our car.

If you’re having a brain blip, there’s a little arrow there to tell you which side the gas tank is on.

This is obviously useful for rental cars as well.

Don’t worry, those holes aren’t dangerous or a sign of structural issues.

They’re there to regulate pressure in case one of the three layers of the window gets damaged.

Better to just forget about it!

There’s a reason phone cases don’t cover that up (and that it exists to begin with).

That’s your secondary microphone. And you need one if you’re going to record anything in front of you.

Otherwise the sound quality would be pretty crappy (especially for those who hold their phones in a way that covers the primary mic).

The indentation at the bottom of your wine bottle is there because it adds strength to the base, keeps the pressure inside from blowing out the bottom, and makes it easier to hold and pour.

It originated long ago when bottles were glass-blown and people needed to push in the bottom seal so the bottle would stand upright.

But if the punt is larger than normal, you may just not be getting your money’s worth.

If you’re into older vintages, you might also notice that the punt helps collect sediment at the bottom, but that’s not its primary purpose.

Running shoes have extra holes near the tops for your shoelaces.

Most of us just skip using them, but if you need a tighter fit (say, if you have narrow feet) then they come in really handy.

And, as you can see, it also gives you more lacing options.

That’s actually the side that’s supposed to point down towards your head.

The grooves help grab the hair better and keep it in place.

Pretty much everyone has used these incorrectly at some point!

Used for fetching spare fuel when you’ve been off-roading a little too long, the triple handle allows the liquid inside not to get sloshed around if two people are carrying it.

There’s a handle in the middle for one person, or two handles on the side if it’s a two-person job.

Speaking of spare fuel, that little cap on the back is not for smaller pours.

It needs to be unscrewed before you pour from the large hole so that air can get in and the gas doesn’t “glug,” making a mess.

We’re more attuned to germs than ever these days.

And while dentists don’t recommend frequent toothpick use, sometimes they come in handy.

And it turns out that the toothpicks that have grooves on top can have their tips snapped off to create a more hygenic little stand to rest them on.

Padlocks designed to be used outdoors have tiny round holes next to the keyhole.

It can be used to lubricate the lock and as a drainage hole in case moisture gets inside (since that’s not a place you want rust!).

We learned this a few weeks ago and it has totally changed us.

On the side of tin foil (and Saran Wrap, etc), you should see two tiny tabs.

Push those into the roll so it stays in place while you pull out what you need.

If you’re used a glass bottle of Heinz, there’s a raised “57” on the side. That’s the sweet spot.

That’s the spot you’ll want to give a smack in order to get your condiment flowing again.

You can smack the bottom…if you like to get ketchup all over yourself.

Not all shirts have them anymore, but the “locker loop” allows a person to hang their shirt from a locker or door hanger without getting wrinkles.

It’s obviously for places where a hanger won’t fit (or you just don’t have access to one).

Travel bags almost always have a double zipper. Why?

So you can attach a lock to them!

Frankly, we’re a little disappointed that people need to be told what we thought was fairly obvious.

Those tabs on the side of your Apple power charger are there to be flipped open to make it easier to neatly wind up your cord.

Please tell us you knew that already.

Those margins weren’t invented to keep your notes all tidy (although technically that’s what they’re used for these days).

Back in the day, everything from mites to mice used to gnaw on book pages.

The margins preserved the handwriting and gave the little scoundrels something to chew without eating the information.

You’ve probably figured out they aren’t peepholes (and, eww, don’t put your face on elevator doors!).

They’re actually keyholes for maintenance workers.

So don’t stick anything in there.

Some people find it useful to point out that those aren’t there to clean your shoes, but we’re stunned that anyone would try it (they’re filthy!).

But they do serve a purpose and that’s to keep your clothing and shoelaces from getting caught.

We think this one makes sense and you probably could have guessed the purpose of the plastic piece under carbonating beverage caps if you ever really thought about it.

It’s just there to seal the deal, so to speak. Otherwise, all that gas would leak out and you’d have a flat drink.

We’re becoming an increasingly cashless society – and we use coins even less frequently than bills. But you’ve probably noticed that dimes and quarters have ridges on the sides while nickels and pennies do not.

It’s a throwback to the days when coins actually had enough metal in them to be worth the amount printed on them. And that meant shaving a little off the side could make you some money.

The ridges were there to prove the coins hadn’t been tampered with.

That stuff isn’t just unnecessary padding!

Those foam shields block unwanted background noise and soften other harsh sounds. So respect your listener and don’t remove them!

While it’s not 100% foolproof, those indentations are meant to indicate when your milk has expired.

Expired milk produces gasses that make the indentation bulge outward.