These gaffes relate to words and meanings.

​Could You Believe It?

"My dad once told me that the word 'gullible' isn't in the dictionary. 18 years later, I got the joke."

– demolitiondubz

Exposed

"The meaning of birthday suit. I was 26 at the time."

– the_meat_n_potatoes

That's One Interpretation

"when i was about 9 my mother told me that a slut is a woman who likes to have fun. i started describing myself as a slut and i did for about a year or 2"

– adhdgf

Certain phrases depicting something got lost in translation.

Not An Era In Pop Culture

"Prima Donna is not Pre Madonna."

– iremovebrains

"The timeline of music is divided into three distinct periods. Pre Modanna, post Malone, and the dark ages."

– well_known_bastard

How Nutty

"I don't know why but whenever someone mentioned that a piece of furniture (or often the dashboard of a nice car) was walnut, I kind of thought they meant the nut and shells all crushed up and smoothened and I wondered how they did it. Then, in my thirties, I realised they probably make it from the tree. Felt like a right walnut that day."

– livid54

Quite The Release

"I thought orgasm was a nice word for fart when I was 10. Told my mom I had so many orgasms that my stomach hurt."

– shahrukh_khan_SRK

People had strong assumptions about specific things...until they embarrassingly didn't.

One Wrong Vowel

"I was deep into my teens when I realized it’s 'make ends meet' instead of 'make end’s meat.' I always visualized it as procuring the last bit of food you could in tough times. Wrong!"

– um8medoit

There's A Difference

"The Paralympics and the Special Olympics are not the same thing."

"I feel terrible."

– Vic_Hedges

"Ohhhh, friend... no, no, no, no, no.... the 'Special Olympics' is a feel-good charity-type thing where basically anyone with any disability (physical or mental) can participate, regardless of skill and/or ability in whichever event/sport, and at the end of whatever event, everyone gets a medal just for participating."

"The Paralympics, on the other hand.... is affiliated with the IOC, is just as competitive as the 'regular' Olympics, and has elite athletes who must compete at different stages in order to qualify. Additionally, there are class levels based on the nature and level of a person's disability."

"Edit: Okay, fine. Maybe not everyone literally gets a medal in the Special Olympics, but everyone does get some sort of ribbon and/or participation trophy. The focus is on participation, not skill or aptitude. And it's mainly for people with cognitive disabilities, although if you have physical and cognitive disabilities, you can participate. And like I said, as long as you have a cognitive disability, you can participate, there's no tryouts or whatever."

– YonderPricyCallipers

Urine For A Surprise

"I always thought that if a guy didn't hold his penis while he was peeing, that it would whip around like a fire hose."

– zygomelonm

Bamboozled By A Bird​

"Fruit Loops are all the same flavor. I was 27, and I still remember the shock of finding out Toucan Sam had been lying to me my whole life."

– sfw8580

A Painful Lesson

"It took me 10 years and $20,000 to figure out how credit cards were supposed to be used."

– bangersnmash13

Regional Misunderstanding

"I was 8 when I finally learned there was no r in the word 'idea.'"

"For context: I am from Boston."

– Raven4869

Heightened Mistake

"That emperor penguins are only about 4 ft. tall, not 6 ft. like I imagined."

– rachaelonreddit

Envelope Value

"That envelopes are inexpensive. Growing up, my parents didn't have much money, so they were very frugal and didn't waste anything. I drew on an envelope one time and my mom fussed a bit because I already had drawing paper and envelopes were only for mail and that I shouldn't waste them. Fair enough."

"When I moved out for college, I didn't really need to mail anything because email existed and I lived close enough to home to just drive there if I really needed something. When I did have to mail something, I just bought an envelope and stamp together at the post office. It was expensive, but it just reenforced my thought that envelopes are expensive. Paying bills online came about around the time I graduated, so again, I infrequently needed envelopes, and only bought one at a time when I did."

"After getting married, my wife volunteered to handle all of our bills and taxes because she likes doing it. So again, I am not buying envelopes."

"Finally, at age 38, I found my daughter drawing on an envelope. I gently chided her and told her that envelopes are too expensive to just draw on them and to use her drawing pad instead. My wife overheard me and asked what the hell I was talking about. I explained and she laughed for ten minutes before she calmed down enough to show me the box of 40 envelopes she got at the dollar store. Lesson learned."

– philosofik

It's never too late to learn.

But it doesn't mean some realizations way later in our adult lives that appeared to have been common knowledge are downright humiliating.

But isn't that better than being left in the dark about a lot of things?

Truth Delivered

"As a kid my only experience with the mail service was the school bookclub, so my stuff would arrive late, by months at times, and I straight up didn't get the coolest issue in my space magazine collection."

"I still have a gut assumption that stuff just straight up won't arrive if it has to be mailed. I barely ever online shop. I'm finally getting over that aversion, but it took like 12 years for me to realise the post is more reliable than the scholastic book club."

– ASpaceOstrich

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