grundle gravy 

The juicey goodness that runs down the grundle during anal plundering.

"Man I was hittin' Jenny so hard last night in the ass she was drippin' grundle gravy."

grundle gravy by Ian en retard April 3, 2007

Knickerflap Grundle Gravy 

A thick, moist cream cheese like deposit, located primarily in the feminine crotch area- created by flap friction during vigorous exercise in high temp environments or in low temp environments depending on flap mass.

After an extended fast walk session, a large reservoir of Knickerflap Grundle Gravy was evident in the professional lady's yoga pants.

Knickerflap Grundle Gravy by Phantom187 June 3, 2023

grundel gravy 

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.

grundel gravy by MyGrundelKicksYourGrundelsAss March 27, 2007