What is Sweaty Piano?
1.
the rubbing of ones "grundle" on someones mouth leaving pubic hair in their teeth. The piano part comes from the dark hairs in contrast of the teeth, which should be white.
"I gave this girl a sweaty piano the other night. for the next week she complained about pubes in her teeth."
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1.
A volcano-shaped stack of quarters, nickles, dimes, etc. left on the table at a restaurant as a tip. Usually done by d-bags that are too..