Define You Know What Fuck You Meaning

You Know What Fuck You
the best way to end a conversation about a conflict or something stupid.

guy1: A tomato is a fruit not a vegetable.
guy2: No its a vegetable!
guy1: No, it's a fruit. see it says that a tomato is in the fruit family in Websters Dictionary!
guy2: You know what fuck you!
By Devina
You Know What? FUCK YOU!
The best way to end an arguement. You can also follow up with a "SUCK MY MOTHERFUCKING DICK."

Man: I honestly don't care if your child is gonna die.
Man2: You know what? FUCK YOU!
By Bernetta