卑しいやつ, げす.
How absurd!―(人を笑うのなら)―What an ass!―(自分を笑うのなら)―Fool that I am!
He is an impudent fellow―a cool hand.
He is a troublesome fellow.
to be completely disgusted by someone
You impertinent fellow!
He is an impertinent fellow―a conceited fellow―a coxcomb.