"The fact that pages 136 & 137 were stuck together in the Hustler magazine at the sperm bank was an obvious indication that someone had been there cum thumbing it previously."
by billebllunt December 31, 2013

The definitions of "thumb-kin" are thumb-kins.
by Palec Smuk December 14, 2008

Paul: You still txting with Susan?
Peter: Hehe yeah...
Paul: Dude quit thumb fucking your girl friend and lets go.
Peter: Hehe yeah...
Paul: Dude quit thumb fucking your girl friend and lets go.
by Cheddarbox March 31, 2009

by kevo:) May 4, 2022

by pancakedonahue February 8, 2023

1. (n.) When your thumb gets semen all over it after a person (typically male) masturbates
2. (n.) A person with a lot of experience in masturbating
2. (n.) A person with a lot of experience in masturbating
1. "I had a White Thumb last night after I masturbated"
2. "I've been masturbating for so long I have a white thumb
2. "I've been masturbating for so long I have a white thumb
by Omnisexual-Man February 16, 2024

by veronica1292 February 5, 2017
