Discussion Forum—A Way with Words, a fun radio show and podcast about language

I know someone who consistently says, "flip a bitch" when she means "make a u-turn." This is more than a little grating on my ears, especially coming from a woman in her 50's who very rarely uses profanity, and I'm curious about the origin of the expression. I believe she grew up in Kansas and moved in her 20's to the Los Angeles area; could it be regional? She's the only one I've ever heard use the term. Thanks in advance for a clue.

Dan