Definitions by George M.
grind
it's basicly humping with your clothes on. also known as dry humping. some say that if the girl you are grinding with is good enough, the boy could ejaculate. Usually grinding is done while listening to rap music. this form of dance was probably originated by black people.
Rainbow Party
A party at which all of the girls wear different colored lip stick/ gloss and have oral sex with guys!!
Rainbow Party by George M. May 13, 2005