gash maggot

Noun - Australian English. A person who is so crass and disgusting, that they make you vomit a bit in your throat just by speaking. Someone with no morals. Someone who is a bottom feeder.

Etymology: I can't think of anything worse to describe a lady's genitalia than the word gash, It's so crass,
I can't think of any creature on this earth worse than a maggot. They spawn from nothing and are disgusting.

Can you believe that Hillary Clinton lied about being shot at when getting off a plane in Serbia? What a gash maggot.
-OR-
Donald Trump is a gash maggot for imitating a disabled journalist during a press conference.