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2.
when in racing, if your badfast ,it good for you bad for everyone else.
man that 54 car is badfast!
by jeff jurecki August 26, 2007
 
1.
A term used to describe a race car driver who is either pulling away from the pack or is quickly moving through the field.
Jimmie Johnson was bad fast towards the end of the race, and he finally caught and passed Kurt Busch with two laps to go.
by steveracefan May 29, 2010