A sexual term when a man ejaculates inside the partners ass, preferably doggie style, then the one recieving immediately shits with an eruption of sperm covered shit.
Man it was crazy! i just busted a nut in her ass, and next thing you know i was dodging an eruption of shit and cum flowing from her asshole like a volcano. It was a true Alaskan eruption.
by jackie chan1111 May 19, 2010