unless you know what you are doing

A phrase that is often mentioned in technical documentation to make readers more cautious about their actions.

The options http_debug and advanced are reserved for developers. They should not be adjusted unless you know what you are doing. No documentation is currently written for them.

You know what that means, FISH

This is what you say when you are or become a retard. or it is a dumb joke.

You me, gas station. what are we getting for dinner? sushi of course! uh oh there was a ruffe in our gas station sushi. we blackout and wake up in a sewer, we're surrounded by fish. horny fish. You know what that means, FISH orgy. the stench drives in a bear, what do we do? we're gonna fight it. bear fight, bear handed, bear naked? oh yes please. we befriend the bear after we beat it in a brawl. then we ride it into a chucky cheese. dance, dance revolution. revolution? overthrow the government, uuuh I think so. next thing you know, I'm reincarnated as Jesus Christ, then I turn into a jet, fly into the sun, blackout again, wake up, do a bump, white out which I didn't know you could do. then I smoked a joint, greened out, then I turned into the sun, uh oh looks like the meth is kicking in, uuubgghhhugghhuuaaahhhhaahhhhAAAHHHHHHHH!!!!!

You Know What It Is

I don't even have to explain myself . You already know what it is without no context.

Look you got all these achievements! -Peaches
You know what it is!!- Kiki

Do you know what to do with a box of bees?

This question tests if an adult male is a real man or not. A woman asks when assessing if an adult male is worth being in a romantic relationship with. If the guy says yes, he is a real man. If he is confused by the question, he is not worthy. If he says no but expresses interests in improving himself, don't write him off as a not-man yet. there is still hope

"Mike, do you know what to do with a box of bees? "

"uh, no?"

"then learn or go away. I only date REAL MEN."

You know what else is massive?

Used in response to someone saying "massive" in a sentence, typically followed by "LOW TAPER FADE".

Person 1: This building is massive!
Person 2: YOU KNOW WHAT ELSE IS MASSIVE?
Person 2: LOOOWWW TAAAPEEER FADEEE

you know what that means

FISH.

when you're just there minding your own business and then you hear the following words:
"You know what that means"
FISH.

Origin: YOU, ME, GAS STATION on YouTube

If you know what i meme

Oral reference to a meme -

when you are actually out there in the real world but still stuck on memes.

"the feels man, if you know what i meme"