Originally a jewish saying which was commandeered by the famoustelevision series "Star Trek" when jewish actor Leonard Nimoy used it as the Vulcan salute. It's now used as way for us nerds and sci-fi lovers to say goodbye in a different, more permanent way.
Friend moving away to another country - "i'm gonna miss you, man". Nerd - "Live long and prosper"
Leonard Nimoy was famous for saying, "Live long and prosper." He himself seems to have accomplished that thanks to his good looks and pleasant personality, but I wish he would have explained to all of us about how to do it ourselves.
Ruler of Lake Titicaca. Rumored to have a bunghole that gets very angry if it does not receive toilet paper. Cornholio the Great is often seen walking around with his shirt over his head and his hands in the air, chanting songs about his power, and his bunghole.
"I am Cornholio! You do not want to face the wrath of my bunghole, for I need TP!"
Butthead: Shut up, Beavis! (uh huh huh huh)
Beavis: Um, okay. (heh heh heh heh).