1) a harsh but occasionally fitting word to something or someone that is either extremely hard to look at, or has a terrible personality, or both
2) a word that some girls use to describe themselves, often in an attempt to get pity and extra compliments
1) A:That girl Shawna has really bad acne, but still she acts like she's perfect and is a total bitch to everyone.
B: I know, she is such an ugly person!
2) Jenny: Wow, Jeannie, you look so nice in your new dress!
Jeannie: Are you kidding me? You're the one who looks really pretty, I look fat and ugly in this outfit!
Jenny: No way, I'M the one who's ugly!You look gorgeous!
Jeannie: No, its me! I'M so ugly a cockroach covered in sewage wouldn't want to look at me! And you shouldn't talk, you are so pretty!
Jenny: Omigosh, NO WAY! Seriously, look at me! I'm HORRENDOUSLY ugly compared to you!
....and so on