Can be either positive or negative: good shitter or bad shitter. When said positive or negative occurs, exclamation is "shitter shitter(!)", with or without exclamation mark, as appripriate.
"My cat has died". Response: "Shitter shitter." Alternatively: "I have come into an unexpected source of funds". Response: "Shitter shitter!"
by Spruce von Moose August 16, 2006
Get the shitter shittermug. by cuteycaity July 22, 2004
Get the shittermug. by andrew August 15, 2003
Get the shittermug. by lopsyd September 25, 2009
Get the shittersmug. 

