A unique and distinct form of ugly. Worse than ugly, but better than ugly ugly.
Simpsons reference, from Episode #242: "Pygmoelian". pug fugly was first used by Moe the Bartender.
A person who is seriously unattractive. Where anal sex may be the only option since the facial features may cause nausea.
Used when "Butt Fucking Ugly" may be inappropriate.