who you tellin?!

when someone says something that you very obviously already know..emphesis on the "you"! Meant to be sarcasm, but not in an offensive way.

If my girl were to say to me "Johnny Depp is sexy." I'd say "Who You Tellin?!" I know this!

Who killed kenny?

No one knows....

OMG!! they killed kenny!!! YOU BASTARDS!!
yeah but, Who killed kenny?

who fucks a shit

Used in situations of extreme annoyance or anger as a substitute for “who fucking gives a shit” when it’s too much effort to say an entire sentence.

Chad: Hey Brad, guess what?

Brad: What?

Chad: I just matched with another girl on Tinder

Virgin Brad: Man, who fucks a shit!

who ride

a busted up or stupid looking car

Who ride dat cavalier with the spinner hub caps?

Who da thunk it

Short-cutting "Who would have thought it" or "I cant believe it"

Person 1: "I got tickets to the concert"
Person 2: "Who da thunk it! You da man!"

You-Know-Who

The name in the Harry Potter wizarding world for Lord Voldemort. He has also been called "He Who Must Not Be Named", "Lord Thingy", and other appellations of the sort.

Ron: "Hey, Hermione, I heard that You-Know-Who is trying to find Harry. D'you think he wants to kill him?"

The person who asked.

The person who asked is a rare never seen before. It's said to be omnipotent and impossible to reach due to it's speed. Nobody knows the true answer to the person to ASKED. People have gone from universes to universes. But all failed. It seemed like nobody asked. But that was never proved. Even though the person who asked was never proved to exist. It was never proved to NOT exist. Therefore... The person who asked will never be found. It's though authorized to say that the person who asked doesn't exist even though they aren't sure.

Me: Bro who's the person who asked.
Him: Idk man but you can search if you want
Me: nah imma not waste my time