pejorative \pih-JOR-uh-tiv\, adjective:
1. Tending to make or become worse.
2. Tending to disparage or belittle.
1. A belittling or disparaging word or expression.
Though "bammer" is typically thrown about by our rivals as a pejorative term, presumably to mock our supposed lack of good diction and/or enunciation, they're the only ones I've ever heard actually pronounce "Alabama" with an "r" in everyday conversation.