It only really works if somebody else starts it, but my personal favorite is "No you"
No matter what they throw at you, you always have something to say.
"You're probably 12 kid stfu" "No u"
I mostly use it in game chat, and one time I got someone so frustrated that they could not top me that they rage quit.
Admit it, there are times you really want to just look someone in the eye and let loose a string of expletives that would make a sailor blush. Unfortunately, that's not always possible. That doesn't mean you can't let a person know exactly how little you think of them. Reddit got together to answer a hugely important question: