look up any word, like blumpkin:
 
1.
Vaginal Secretions; Booty Juice. Combination of Vaginal Secretions and Butthole Secretions combined to form a thick, opaque mustard-like paste. Usually forms after 2+hrs of Vaginal, Oral, and Anal intercourses. Butthole and/or Vaginal Creampies may act as a catylst of formation of Slut Mustard.
Ya-n-shit bra I was taggin dis bitch n nutted like 3 times all up in that gootyhole and dat dookie maker, when iz done she had some slut mustard fo sho, made dat bitch eat dat shit then do a line.
by dacacheman June 28, 2009
 
2.
A phrase used to describe anything used in procuring or during casual sex (i.e. alcoholic drinks, make-up, cum).
Just heard someone use the phrase "slut mustard" in a sentence. Win. (from textsfromlsatnight.com)

She spilled slut mustard all over my nice shirt!
by lubelubelube June 28, 2009
 
3.
The aroma exuded by a slut.
"She was oozing slut mustard."
"That slut mustard smelled like a summer's breeze."
by SarDer Bear June 28, 2009
 
4.
Saying that a slut is covered in mustard. Sayin this as an insult to a hoe.
Also meaning a slut with yellow teeth from giving head.
Like saying,boy 1- "Wow, did you see that girl Jamie? She is a real SLUT MUSTARD."
boy 2-"Yeah I did, guessing she doesn't brush after head."
boy 1-"That's Sick!"
by talking pine cone2 July 08, 2009