What is You're Cool?
1.
A fake compliment said in a
Loser: Oh no I just crashed my car
Jackass: YOU'RE COOL.
See
2.
What you say when somebody has to ensure their "coolness". It has to be done in a sarcastic tone, or else the effect isn't achieved.
1: Dude, do you have the homework? I fell asleep last night
2: Nah man, I don't do homework, that shit is fucking nerdy
1: Oh you're cool.
See