A variation of the mushroom stamp (slap), where one's penis is covered with semen and/or residue left over from a good anal sex session. The icky is the semen and/or residue, the thump is the sound of the stamping (slapping) penis.
Sally was a little agitated after I gave her the ol' icky thump, but after another go at things and a shower she piped down.
by Tubbo July 16, 2007
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Get the Thumping Gourd mug."Grab me thump tank cuz they won't catch me leakin,
Cuz punks try to hang n bang
Every weekend"
Mac Dre
Cuz punks try to hang n bang
Every weekend"
Mac Dre
by kushloves November 1, 2010
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Get the theater thumping mug.Is she that fat?? Dude she was rubber thumpin down the hallway.
She was rubber thumpin so bad things were falling off the wall.
She was rubber thumpin so bad things were falling off the wall.
by G8KeaPoR May 5, 2011
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