Alien creature that resembles a lamprey. It developes inside a human host until it bursts out of their ass.
"Boy did that shit weasel burst out of my ass. I sure am dead now."
by William March 29, 2003
that stuff you plunge out of your bathtub when it gets clogged with hair
Gotta plunge the tub shit weasel is clogging the pipe.
by fangsneed March 09, 2012