Person 2 "Why not?"
Person 1 "A Sierra posted that."
Person 2 *Gasp!*
When you have sex with a girl and you come in the butt and it comes back out because she farted.
Def. 2.-person noun- Sierra
General name of hot girls, sometimes blonde.
Yeah, Sirra is small, but she have lots of badonkadonk for a white girl.-
Badonkadonk, see butt.