by The CornRoller October 8, 2008

by C. McSwoffer August 25, 2007

by RangerBert April 3, 2016

by fyrefang December 25, 2008

To beat ferociousally, as in a sporting event, as though you beat them in a tub so as not to get blood all over.
by cobraglf January 18, 2007

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

by big goobie April 22, 2010
