A general-multi used DC Metro area term used to describe a person who has no style, taste, or class. Usually this person has no idea that he/she is classified as a Bamma - rather they go about their daily lives thinking what they do, say, or wear is acceptable.
1. That dude came to work with dress slacks and white tube socks..what a BAMMA!
2. I got a co-worker who is missing 2 front teeth, but she came to work showing me a portofolio of pictures she got from Sears, talking about she's gonna be a model. Yo, that chick is a straight Bamma!