A dirty, disgusting and often bitchy/pissy twat
Shut up you litte sour twat!
Go wash yo sour twat!'
A sour...
1) A great word to shout out.
2) A woman's vagina.
3) A blow to the face or genitalia.
4) Used by Tweety.
5) An offensive term for a person.
6) Acronym for The War Against Terrorism.
Shut up you little sour twat.
You don't gotta be a sour twat bout it