Tub-shitter or T.S. is used to describe a grotesquely obese (fat) person. Basically, a person too big to use a toilet that has to park (sit) their ass on a bath tub to shit.
by GreatD2 May 2, 2006
Get the Tub-shittermug. Get the Tub-shittermug. Get the Tub-shittermug.