Don't mess with these people: they've got some quick and witty comebacks. When your friends are messing with you or a stranger is shouting at you, that's the time to come up with a witty reply . That's a lot easier said than done. It must be a universal experience to have nothing to say in that moment, then six hours later while you're in the shower, you suddenly think of the perfect comeback. But then it's too late! That's why it's extra satisfying when you do come up with a hilarious response…