When a hot woman passes by, or if anyone sees a hot chick, you yell throttle to inform everyone you would fuck her. Also, jokingly used on fat/ugly chicks. The great thing about throttle is that no women know what it means, so you can say it straight to their face and they will have no clue.
Drag racer, more particularly motorcycle street racer who races from streetlight to streetlight. Also called "T-hopper". Usually refers to a novice street-bike racer.
v. T-hopping - the act of throttle hopping.
Related: T-hop - gathering of street racers for the purpose of street drag racing.
Hey man, I just got texted that the boyz is gonna do some T-hopping over on SR 26 - 3:15 a.m.
Johnny thinks he's a balls-out drag racer, but he's only a late night throttle hopper at best.
Jeff reading text message: "T-hop 12^, SR12 Pig-2- McD's. {Race starts at 12-up, i.e. 12 midnight on State Road 12 from the Piggly Wiggly to McDonalds.}