No, not the spongebob bull worm but the act of shitting in the snow with the length of at least 4 feet. Preferably in the lawn of someone you hate, or if they were born in texas.
Guy 1: WHO THE FUCK SHAT ON MY LAWN!?
Guy 2: Damn, that guy got an alaskan bullworm on his lawn
"The Alaskian Bull Worm" is when a female or a male takes their finger and hits the male's penis back and forth. It takes great finger agility and erected penises to create the sensation of "The Alaskian Bullworm" This is an expierience that you will never forget. Tell your sexual partner to get their fingers ready!