1. The best evolution of the cycling form. Unlike just riding to get from point A to point B, BMX involves whatever you feel like adding. See a good driveway curb and bust out some air with style off of it.

2. A sport (bicycle motocross) which evolved from motocross racing (aka: dirt biking) which involves racing on a dirt track with berms and jumps on a bicycle. Two major sacntioning bodies exist today. The ABA (American Bicycle Association) and the NBL (National Bicycle League).

3. Usually a 20" (can be 24") wheeled bicycle designed to ride on dirt trails, jumps, street obstacles, or skateparks. Not a kids bike or dirt bike.

An amazing thing, many good hours of my life spent.

Good times.

All you people saying "BMX rules, I kick the fuck out of skaters" need to get your middle class heads out of your arse and get a clue. Silly pricks. BMX and skaters should get along, its all better than doing smack and stealing cars and respect to anyone who rides, skates or blades for that reason. I would not call it a sport either, no rules, no teams...get a clue you wankers.

Ohhh, and take your brakes off, give it a go and if you dont like it put 'em back on.

The greatest thing on the planet.

extreme biking yo

a sick thing to do. bmxers are gnarly and what they do takes skill and balls. like skateboarding, requires a lot of dedication and practice.

Bicycle Moto-Cross, type of bicycle competition which originated from moto cross racing. Originally only included raceing but in recent years has also spread to street, vert, park, and dirt competitions.

One of the three skatepark sports (bmxing, skateboarding and rollerblading) where the bmxer rides their bikes and does 540s out of the bowl and other massive shit. Often (but not always) they seem to have a problem with skateboarders and rollerbladers, but are ignored by both. If you Bmx, then beware of the skaters and bladers as they will get in your landing zone. If you skate or blade, beware of bmxers as they are really fast and heavy and hurt when they hit you.

And even though I skate, I didnt bag out bmxing. Its a shame it doesnt work the other way around.