Most people reddit before
Tresemme 21
They commeownicate.
Ten. (Shame this one doesn't work too well for reddit - the funniest part of this joke is the third punchline enjoying people struggle to understand what the hell you're talking about.)
Because 12 13 14!
Christopher Walken. (Not sure if it's a repost, but I don't think I've seen it posted here.)
Three. One to do it, one to complain that it has already been done before, and one to repost this joke.