Grundle Butter

Noun: A greasy semi-transparent fluid which accumulates in the area between the asshole and ball sack (known as the grundle)

Verb: Spread or cover (something) with grundle butter

Noun: "Why does that napkin smell like shit?"
"It's got grundle butter on it"

Verb: "Budget rental trucks pissed me off so bad I grundle buttered their doorknob while they were closed"

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