Having a slut or pornstar on her stomach while pulling her arms backwards. At this point she sprays dung out her dirtstar like a rooster tail from a muddydirtbike
Adam Stevens was dirtbiken the dirtstar on Jaysmom, it made quite a mess.
A phrase used to describe the kind of people who ride trucks and dirtbikes. They also drink beast, go to vo tech, and like to sport the white trash 'stache.
I saw that kidKenny from vo tech today. With his Metallica t-shirt and white trash 'stache, he's looking totally trucks and dirtbikes.
A supermini is a stock 84cc mini (usually one of the five major dirtbike brands) with a modified cylinder of 100, 103, 105, 109, or 112cc's. These dirtbikes also have a 16" rear wheel and a 19" front wheel as opposed to the normal 14" and 17" wheels on a stock 85cc bike. These bike's ate the perfect transition bike from a mini to a full sized bike. Often, a skilled rider on a supermini can catch and pass an adult on a full sized bike.
"dude did you watch number111 on the Yamaha supermini dirtbike?"
"ya, he was doin the 90 foot triple jump that most of big bikes won't even do!"