Top definition
A form of Male masturbation, where the penis is taken between thumb and fore-finger and ground back and forth to orgasm. Practiced by those with unbelievable shrunken genitals. See also Micropenis.
Man 1: Where's he gone?
Man 2: Under the stairs, he's having a Gilby Twist
by Haroldsonson February 04, 2010
Get the mug
Get a Gilby Twist mug for your fish Rihanna.