Tweeker
Someone who is a slut,whore, tramp, or turns trics. Referring mostly to females. She openly appears as a slut and is very forward in the way she approaches a male. She mostly performs sexual deeds for males and brags about it.

(origin: Philly particularly in the North East area)
That girl you're dating is such a tweeker. She slept with Jerome John and Darryl in one night.