Tweak Freak

Someone (most often a female) who is normally timid and reserved, but becomes a sex feign/ freak-a-holic when she's high, ie; under the influence of meth aka methamphetamine, ice, speed

"My husband loves my Tweak Freak alter ego.*

" That chic acts like a nun in bed, but if you get her high she becomes a Tweak Freak. "