Top Definition
The act of going for a toss in the hay; passing the graving; churning the butter; feeding the pigs; passing the mustard; buttering the biscuit; unsheathing your weapon; doing the dirty; snarking the snake; having sexual relations with another person.
"Yeah, man, me and that chick were galumphin' all night long.
by thecolorplaid October 15, 2011

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