which I define as the act of seeing a pair of boobs you think look familiar but belong to a complete stranger. Even more pronounced when it's groping and not seeing. Happens mostly at parties when drunk.
Alright already, I'm sorry I questioned your vocabulary skills. Jeez.
Gastacular? I'm sure it means something along the lines of magnificent flatulence. Get your gastacular self outside, people in here are trying to breathe.