Top Definition
The act of index finger insertion into one's anus with the mission of prostate stimulation. The purpose of prostate stimulation is increased semen discharge distance.
Yo dude, C-Mock told me to try tickling the walnut--it worked man, I blasted through the sheets!
ayon kay Danger, ShallenVag, the D, Hamil$tein ika-19 ng Oktubre, 2005
5 Words related to tickling the walnut

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