Top Definition
The sweat that accumulates in the resevoir that is the spot between the penis (or vagina) and asshole. Usually smells worse than other forms of sweat and is probably toxic.
I went over to my girlfriend's house after soccer last night and while we were fucking around, she cleaned my gooch with her tonque. I'm pretty sure the grundel gravy killed her.
by MyGrundelKicksYourGrundelsAss March 22, 2007

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