A person sho exhibits all the tendecies of an asshole and a jackass. The unique combination of being obnoxious, (asshole), and completely obtuse or insensitive (jackass) requires it's own insult.
Can you believe that Jackhole cut me off and thengave me the finger for it?
A person whose behavior resembles both a jackass and an a****** at the same time. Often used as a term of endearment or to address someone you are typically fond of.
"Stop being a jackhole or you'regoing to embarrass yourself."