Not to by confused with Negative Nancy, a Rude Nancy is the female/male of the group who insults people and uses a lot of sarcasm that everybody gets sick of within five minutes. The name has no alliteration like Negative Nancy because Rude Rhonda sounds stupid.
Person 1: Haha man, I'm so hungry. Do you guys want to go to Taco Bell?
Rude Nancy: Why do we always have to go to Taco Bell? That's all you ever want to do. Yes, I would KILL to go to Taco Bell for the 439,483 time this week.
Person 1: Shut up, girl. Don't be such a rude nancy.