To snowboard or ski without a pass or on someone else's seasons pass.

Wearing underwear with skid marks on them

When you take a huge dump, and either run out of toilet paper or otherwise neglect to wipe your anus as sung about by the rapper "Chamillionaire" in his song "Ridin' Dirty."

* Refers to a game played between friends where points are earned for succefully having sexual intercourse with extremely obese women without being caught by one's friends. If a participant is caught during this horrific act points are taken away and added to the finders point total. These women only qualify if their obesity is comperable to the fat women featured in Spencer's gag cards.

* The Chamillionaire song "Ridin'" was created to commemorate a specific instance where the artist won this game by sexually pleasuring a morbidly rotund transvestite. This event led to additional (bonus) points for Chamillionare which gave him a solid lead and eventuallty a win in a game between him and his friends.

When the length of a male's pubic hair surpasses the length of said male's penis.

Having anal sex. Riding dirty refers to having anal sex or anal intercourse, usually without a condom.

1. When you drive a car or motor cycle without being:
A. licensed
B. Insured
C. Registered

Or being drunk,having drugs, guns, a prostitute or ugly woman/man in car.

2. Having sex with a woman/man who has bad hygene or has had a lot of sex partners.