fugly
fugly is the mix of two words. It can either mean fat and ugly or fucking ugly. You can take your pick. Evolved from people needing to say something really mean, but in a way that still sounded unpleasant, but you could get away with it at school or in the wrong company. The "fat and ugly" version of fugly is from America and the "fucking ugly" version of fugly is from England.
"Oh my god isn't Emily looking fugly today" normally said by bitchy girls (fucking ugly or fat an ugly)
"This dress is so fugly" (fucking ugly)