When somebody is so ugly that they look sort of like a
bug, they are referred to as "uggly buggly." This is a step past ugly, but not far enough to be deformed.
Often, this term is reserved for
gross looking
people who still act like complete skanks, which just furthers their ugliness.
Guy 1: "Do you see that
girl over there? I wouldn't hit that even if I was
drunk enough to have sex with an exhaust pipe."
guy 2: "Yeah dude, she is uggly buggly"