Sliming Slut is as girls generally or occasionally boys start losing weight through diet or exercise they test there new found attractivness by flirting and sleeping around with others more frequently than when they were unhappy with there size.
Boy A. Hey Johnny have you seen Sarah she has lost loads of weight.
Boy B. Yeah she is doing well but she is becoming a complete Slimming Slut
I heard she had Tommy, Mike, The guy from the coffee shop Edward and Ben last week.
Girl A. Hi Jodi how are you doing wow you have lost loads of weight.
Girl B. Yeah its amazing this new diet i am half the size i feel so invigorated i had sex with 6 different guys over the weekend.
Girl A. O dear sounds like your a slimming slut