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1.
Someone who is a complete cock but an absolute arse at the same time.
Example A:

"You alright pal?"
"No I'm fucking not, someone invited that Cock-Arse Tony to my party"

Example B:

"Do not invite Tony to my party, he's a Cock-Arse"
by Hector Knox December 27, 2005

Words related to Cock-Arse

arse ass cock dick nob
 
2.
A cockarse is taken from the Tenacious D album. It insinuates that someone is of homosexual tendencies.Or someone who is annoying you greatly
"Shut up you cockarse!!"
by lewis December 15, 2004