Check out the Roadie Dictionary of Slang. Below are some crackers! Even has a definition for Rob Rau:
Animal -- Unhuman rider. Someone who rides up mountains in a 100 inch gear.
Balls are in the purse - When your buddy either won't ride with you or he is exceptionally weak and timid. "Get your balls back from your girlfriends purse!" "You must have left your balls in your purse!".
Bus stop flop -- that humiliating experience when you fail to click out fast enough at a stop sign or intersection and flop over on your side.
Dine off the big plate -- Use the big ring.