a thing or person which is dumb or bad in a certain way like performance or just overall intelligence.
"god you are such a shitterton josh" said luke.
"oi,shut the fuck up you're the shitterton you have a 70 in art" said josh.
The shittiest street in your city.
Fuckboy: Did you know that Alex lives in shitterton street?
Fagduck: Oh, really?
Fagduck: Fuck that guy.