Rockgasm

A spontaneous, uncontrollable rush of emotion and joy experienced while listening to rock and roll music, especially heavy metal. Will likely be accompanied by screaming "ROOOOOOCCKKK" while making the "sign of the horns/fist of metal" and/or furious headbanging. Note: the rockgasm may or may not be accompanied by an actual orgasm. May also be used as a verb.

Dude, I just had a rockgasm while listening to Tenacious D!

Oh man, I just rockgasmed hardcore to Steel Panther and now I have to change my shorts.