piece of tail
1. slang Someone with whom to have sexual intercourse or engage in sexual activity; a potential sexual partner. (Potentially pejorative or objectionable; usually said of a woman.) There's a fine-looking piece of tail down at the end of the bar. I'm going to go over and talk to her, see if I can't make something happen.
2. slang By extension, sexual intercourse or activity in general. (Potentially pejorative or objectionable; usually said of a woman.) God, I haven't had a piece of tail in weeks! I must be off my game or something.