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What obvious adult discoveries made you feel a bit of a plonker?

700 replies

Airconfan · 21/09/2026 00:36

What’s something you learnt as an adult that made you think that’s completely obvious and yet I have never considered that….i feel like a bit of a plonker?

Mine was when taking tablets, the more you drink with it the better it will dissolve. I think alot of tablets are testing with the assumption people will drink 250ml alongside it.

OP posts:
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11
ISpeakJive · 21/09/2026 12:33

That the shop ‘Zara’is actually pronounced ‘Thara’…

Musicmummy63 · 21/09/2026 12:34

Bananavibez · 21/09/2026 03:19

That you dont rinse your mouth out after brushing your teeth

I absolutely did not know this! Will not be rinsing going forward.

SecretsAndLies77 · 21/09/2026 12:38

That America isn’t the place of benevolence, abundance and justice I thought it was from watching American movies as a child

jarviscockatiel · 21/09/2026 12:39

I was mindblown when I saw my first pineapple growing on the ground a few years ago. For some bizarre reason I always thought they grew on trees like coconuts!!!!

saveforthat · 21/09/2026 12:41

VenusThighTrap · 21/09/2026 10:53

Why did the chicken cross the road?
to get to the other side

I did not realise until someone pointed it out recently that other side = death.

That's not true.

Weekmindedfool · 21/09/2026 12:52

bongsuhan · 21/09/2026 09:59

I believe the water stays put as the earth revolves, so it is not the water rising when the flood comes in and out but the technically the land moving in under the water "bulge".

Edited

It’s not quite that simple and certainly not quite analogous to the Earth moving relative to the Sun giving the sense the Sun sets as per the pp I quoted.
The entire ocean isn’t static relative to the Sun and dragged across the Earth surface to constantly face the Sun. If it was lakes would empty as the water was pulled out as the Earth rotates for example.
Theres definite movement in the oceans water though which results in the rise and fall of the tides.

Additup · 21/09/2026 12:55

Bargarran · 21/09/2026 11:09

I suppose I was technically an adult when I realised for good that the Biblical history of Mankind was allegorical. As a child, I literally believed in Adam and Eve, Noah's Ark, Heaven and Hell as physical places, and all that other nonsense.

But the remains of Noah's Ark have been found, haven't they???!!!

nobeer · 21/09/2026 12:55

The battle of Trafalgar didn't take place in Trafalgar Square.

bongsuhan · 21/09/2026 12:59

Weekmindedfool · 21/09/2026 12:52

It’s not quite that simple and certainly not quite analogous to the Earth moving relative to the Sun giving the sense the Sun sets as per the pp I quoted.
The entire ocean isn’t static relative to the Sun and dragged across the Earth surface to constantly face the Sun. If it was lakes would empty as the water was pulled out as the Earth rotates for example.
Theres definite movement in the oceans water though which results in the rise and fall of the tides.

This is what I was (inadequately) referring to (from about 0:40):

- YouTube

Enjoy the videos and music that you love, upload original content and share it all with friends, family and the world on YouTube.

https://www.youtube.com/watch?v=dBwNadry-TU

Additup · 21/09/2026 13:00

Alondra · 21/09/2026 12:30

Understanding men skin faces often look younger than women at similar age because daily exfoliation. Men shave and get rid of dead skin renewing production of younger cells.

This isn't a thing. Many women routinely exfoliate their skin. Also male skin is thicker than female skin which is one of the reaons it ages differently.

SweetnsourNZ · 21/09/2026 13:01

Merrybandofpirates · 21/09/2026 07:16

A huge number of women and girls do. Don’t shame people for that, you’re being awful. Just make sure any girls in your life know how it all actually works.

Thank goodness we are more open about female bodies now. Many girls didn't even know they had a vagina until their teens as late as the 80s. The whole area was usually called one thing and generally that was a nickname that was said quietly.

x2boys · 21/09/2026 13:05

Bargarran · 21/09/2026 11:55

Not to mention 'lickle' and 'skellington'..😂

😂😂

SweetnsourNZ · 21/09/2026 13:07

stillhiding1990 · 21/09/2026 07:17

I’m not - I’m just puzzled. Where did they think the uterus came into it?

Didn't think that far. The uterus was an enclosed organ in my mind.

SweetnsourNZ · 21/09/2026 13:08

Squirrelsnut · 21/09/2026 07:22

He was from Hull, born 1930, and had a strong 'old Hull' accent. I miss him.

I've heard chiminey too. Must be different dialects.

SabreIsMyFave · 21/09/2026 13:11

saveforthat · 21/09/2026 08:05

I've posted this before but I thought the channel tunnel was under the sea not under the sea bed.

Quite a few people thought that for a while. Grin Some people had this image. Wouldn't it be wonderful if it was like this?!

I knew it was under the actual sea bed personally.... However ... there are quite a few hooters on here (that people didn't know,) that I was fooled by by too. Including thinking you pee out of your vagina. I thought that til around 18-19 years of age........ Blush I did Biology at school too, and enjoyed it, and was quite good at it. So I thought! 😂

Also, I used to think submarine was pronounced sumbarine. 😆

I also thought HOLLAND was a country til about 10 years ago (my late 40s!)

What obvious adult discoveries made you feel a bit of a plonker?
EatSleepHooverRepeat · 21/09/2026 13:12

I’ve spent years unravelling the Hoover cord when I was recently enlightened that you can just turn that hook upside down and the whole cord is released. (Does that make sense?)

Allseeingallknowing · 21/09/2026 13:12

Mum used to refer to people as human beans! I continued to think this until I saw it written down.

SweetnsourNZ · 21/09/2026 13:14

PaulBaker · 21/09/2026 08:17

I learnt this recently and it has blown my mind every day since.

I think it is a recent recommendation though as I only heard it recently. My older children were taught to rinse out thoroughly as I was.

Allseeingallknowing · 21/09/2026 13:14

Musicmummy63 · 21/09/2026 12:34

I absolutely did not know this! Will not be rinsing going forward.

And have a mouth full of foam? I always rinse

idrinkandiknowthings · 21/09/2026 13:15

Until last year I thought the sun revolved around the Earth. I'm nearly 59 and reasonably intelligent lol

Isabella70 · 21/09/2026 13:15

SweetnsourNZ · 21/09/2026 13:08

I've heard chiminey too. Must be different dialects.

Ah you've just invited Dick Van Dyke (or as the old joke goes Penis Van Lesbian) into my brain... He's coming up for his 101st birthday you know.

slughater · 21/09/2026 13:16

that's what the Borrowers called us- maybe she was quoting them

BoomBoom70 · 21/09/2026 13:18

That ‘segue’ is pronounced ‘seg-way’ - found this out last week!

Allseeingallknowing · 21/09/2026 13:20

StormInaDcup99 · 21/09/2026 09:26

That the vagina is not smooth tissue. It is shaped like an accordion so it can expand when needed eg childbirth

Got this vision of giving birth accompanied by accordion folk music!

Takethehuntingquiche · 21/09/2026 13:20

Allseeingallknowing · 21/09/2026 13:14

And have a mouth full of foam? I always rinse

You spit out any foam then wipe the outside of your mouth with water