The special sauce created when an obese person has thigh sweat and to absorb the perspiration they add baby powder creating a gravy-like nastiness reserved for a special fetish episode of Jerry Springer.
Man 1: Yo, that girl is nasty. Don’t believe her when she tells you she has a WAP. It’s not her pussy thats wet.
Man 2: How do you mean?
Man 1: She had so much thigh sweat she had to go add some baby powder to absorb it all, but all she managed to do is make thigh gravy. I was like What The Fuck! I’m not putting my face in that.
extremely large thighs that look as if they are filled with gravy.
that bitch is so fat you break her leg and gravy falls out, she's got gravy thighs