when you take the ball sacks skin and squeeze it together in your hand to make it wrinkly like a "walnut"
by austin w. August 13, 2007
When a man sticks his finger up his ass-hole in order to tickle his prostate, causing an instant, extreme orgasm. The prostate (looking like a walnut) is commonly used as a sex toy for vietnamese people.
by reivergirlala October 2, 2008
by Pseudonyms 6969 December 11, 2015
by cgp24 December 13, 2010
by Bed time April 1, 2010
Did you see Walnuts' speech last night? You know, the one about inflation. Did he look dead to you or what?
by Iacopus August 8, 2008