Similar to the Mile High Club. Invoves sex in a moving motor vehicle. Platinum membership for people actually travelling 100 mph. Darwin awards for people driving +100 mph while having sex.
A: Does that semi have 100 MPH club on the back?

B: Yeah. If he starts swerving, I'm gonna pull alongside and you whip out the video camera.


A: Did you hear? Adam joined the 100 mph club last Friday.

B: Yeah, but his mom was driving.
by bluhipo September 13, 2005
People who have been given road head while driving 100+ MPH
I joined the 100 mph club yesterday driving down I-94
by Craig P September 28, 2005