Infection form of the flood from Halo and Halo 2.
Holy crap! Look at that wave of shit weasels! Run!
by Mike Montuori May 06, 2005
Comes from Stephen King's book, Dreamcatcher. Humans who eat the alien virus call "byrus" grow an alien weasel in their bowles and when it gets too big it bursts out of their butt.
"Mcarthy's lower midsection was covered in blood as the shit-weasel came out"
by Patti March 01, 2005