grind
1) often used in wigger freestyle rap.
2) an act of sensuality/sexuality whilst dancing, where a female rubs and rotates her rump errotically on a males crotch
3) a skating trick, where the skateboard moves along a cornered or thin surface in an unorthodox way
1) 
'I see you like yeah,
man, tight yea,
put your grind on
put your rhymes on
shes hot tonight
just standing there
...woooow..just standing there?'

2) 'DUDE LOOK AT MICHAEL WHILE HES BEING GRINDED BY MARIE, HES TOTALLY ABOUT TO PISS HIS PANTS!' 

3) 'Watch Tony Hawk grind that railing!'