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1.
Verb.

To smack the inner thigh with your own penis, making a pleasing smacking noise for everyone to hear.
Guy 1 - "Hey Guy 2, do you hear that?"
Guy 2 - "Yeah it sounds like smacking."
Guy 1 - "Aw man! Guy 3 is wolly womping!"
by Master Walrus Doorknob February 13, 2011