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2.
The act one sticking one's thumb up someone's ass. Similar to wedgies and wet-willies, thumbkins are generally considered more 'classy' and are often used in gentlemenly situations.
"I say, I do believe I have received a thumbkin!"

"Thankyou sir may I have another?"
by Son September 13, 2003

Words related to Thumb-kin

anal rectum thumb anus bondage irony violent thumbs up
 
1.
verb.
"Givin someone a thumb-kin"

Sticking your thumb real hard and fast into someones anus.
"I'm gonna give you a fucking thumb-kin, dude"
"Look man, you want me to do a thumb-kin"
"Yo niggaz bettah watch out cuz when i do ma thumb-kin"
by Simon Talek September 10, 2006
 
3.
noun

Something that giving a thumbs up to is greatly ironic.
The definitions of "thumb-kin" are thumb-kins.
by Palec Smuk January 21, 2007
 
4.
Crazy ass gun wielding honkies from the "thumb" of the State of Michigan.
Terry Nichols was building bombs to level government buildings, but what else can you expect from a thumbkin?
by RandalPnk October 01, 2007
 
5.
noun

Something that giving a thumbs up to is greatly ironic.
The definitions of "thumb-kin" are thumb-kins.
by Palec Smuk January 26, 2007
 
6.
1. (n) A small, thumb-sized penis.
2. (n) The owner of a small, thumb-sized penis.
Just between you and me, Phil is a thumbkin.
by Heptune May 11, 2005