A 1337 way of saying "you". Used by dank MLG haxors.
OMG U R SO F00K1N D4NK1NG K3WL M9!
The strongest comeback\reply of all time.
Person 1: ur mom gay lol
Person 2: No u
Person 1: *Heart failure*
this is a comeback that will eliminate anyone in any situation, this mean if you are in an argument, if they insult you, this comeback will basically murder them!
Enemy: You're fat
You: No u.
Enemy: OMG I AM SOOO SORRY FOR THAT I'M SORRY FOR MY ACTIONS
The ultimate recovery line.
Generally used after a roast, your mum gay being the most common, the victim can use this to pull a switcheroo.
You can also use the phrase 'Uno reverse card', however, no u works the most effectively
Billy: Oi Jeff your mum gay
Jeff: no u
Billy: *cries*