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When a young male lowers his standards for casual sexual encounters. "Slut humping."
"I feel like there are no interesting girls here.... I think I'm going to end up slumping again for my birthday."
by ogmarshall January 13, 2009
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One Human Humping Another while Asleep...

Sleep + Humping.... often done when both partners have PJs on.
One Night after a Long day at Work Bob Briefly Slumped Jane.... the Slumping was not of a duration that Jane found Acceptable.

Jane was left unfullflled.
by DanielD June 14, 2010
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