Definitions by El Bicho

carbon dating 

Having a relationship with an elderly person. Dating outside of an age group.

Charlie: "I don't see Elroy around much these days."

Filbert: "Oh, no. He's off downtown with a group of geezers. He's into carbon dating now."
.................................OR
Charlie: "I just saw Elroy with this ancient looking bird. I think his new game is carbon dating."

carbon dating by El Bicho April 10, 2010