(v.) doing exercises, often crunches or push ups, before sex in order to look marginally more fit; to do a warm up routine in preparation for raucous sex.
Girl 1- "Isn't Mike coming over?"
Girl 2- "Yeah!"
Girl 1- "Then why are you doing crunches?"
Girl 2- "I'm just limbering for timbering. It's gonna get rough tonight, plus I want to burn some flab."
Guy 1- "You trying to drink some Bud tonight."
Guy 2- "No, I'm gonna be timbering my slutfriend."
Guy 1- "Send her my condolences."
Guy 2- "No remorse, bro. Grow a pair."
The art and science of whipping timbits (donut holes) at people while driving by. Normally, the person in the passenger seat will be the one timbitting. It is also recommended to yell nonsensical bullshit at people as you toss the timbit, such as 'fettucini alfredo!'