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aero - adj. abbreviation for aerodynamically efficient.
bacon - n. scabs on a rider's knees, elbows, or other body parts.
bagger - n. a person that habitually bags out. Also known as a loser.
bagging out - v. canceling a ride for something other than a death in the family.
bail - or
bail out.
v. to jump off in order to avoid an imminent crash.
beartrap - v. to slip off one pedal, causing the other pedal to slam one in the shin, when one gets kracked with a pedal.
betty - n. any female rider.
bunny hop - v. to lift both wheels off the ground by crouching down and then exploding upward, pulling the bike with you. Useful for clearing obstructions, such as curbs, potholes, logs. Differs from its older BMX & trials meaning.
Knarly - Used by older BMX'ers from the 80's, when someone did something really cool one would say 'Whoa, that was Knarly Dood'
rad - slang for 'Radical' which means great or cool. (See also Knarly)
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