Originally, adult sports involving a high level of danger and adrenaline that would not appeal to most people but attract a daring few: things like skydiving, bungee jumping, rock climbing, ice climbing, technical mountaineering, hang gliding. It generally did not include sports which were "extreme" in their early years but since became mainstream (e.g., downhill skiing or scuba diving), nor did it include children's and teenager's activities like BMX or skateboarding. Extreme sports originally meant adult and non-mainstream. Later (from the late 1990s on) the meaning changed to become synonymous with non-dangerous kiddie sports and the definition has more to do with age (and with marketing energy drinks, Mountain Dew, baggy pants, and punk and thrash music), much to the chagrin of older folks involved in dangerous sports who now would rather the term would go away.

Masturbating without the doors locked when your whole family is home

An extreme sport is usually defined as one that requires extreme levels of endurance, balance, skill, co-ordination; also, ballistic reaction timings, spacial orientation abilities, and massive amounts of oxygen assimilation. Extreme sports are dominated by youth, age range 6 to mid 30's. The first recognized extreme sports, were officially documented by the Post Office commissioning of a stamp series highlighting the first three: Skateboarding, Snowboarding, and BMX bike riding. Since that time, several others have been added to include, Inline Rollerblading and Motocross.

Doing your homework when the teachers collecting it in.

Highly over-publicized activities that at least half the time are undertaken or discussed by otherwise boring people in a desperate attempt to seem interesting. Posers are extraordinarily abundant, especially inThe Heartland. After all, how the hell does some kid in Nebraska go surfing, or rock-climbing in Iowa?

Sports which rock, such as boardin, inline, bmxin, sufin. Need i go on?

A predominantly competitive (comparison or self-evaluative) activity within which the participant is subjected to natural or unusual physical demands. Moreover, an unsuccessful outcome is likely to result in the injury or fatality of the participant, in contrast to non-extreme sport. -Cohen, Baluch and Duffy

the best kind of sports. the ones that impress like surfing paintballing and snowboarding. they are the sports all the jocks say are not actually sports. but they are a hell lot more fun then the normal sports. ride hard

A punk that obsesses over the extreme marketing hype. An extreme sports punk:
rides a skateboard
drives a hummer
has a mohawk
has tattoos
has testicular rings
screams "EXTREME" at the top of his lungs
is an asshole
has an IQ lower than 30
participates in vandalism
hates the establishment for no reason other than the sake of doing so
is full of shit
will do anything if you "triple dare" him to