thumbkin 

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?"

thumbkin by Son September 13, 2003

Thumbkin 

Performing the act of splinting on a consensual female partner, while performing oral sex on her. This involves inserting your thumb into her vagina, pushing down towards the anus to help her relieve constipation, while sucking on her clit.

"My lady was horny as hell, but also constipated so I offered to give her a thumbkin. The simultaneous orgasm and poop drove her absolutely wild with pleasure!"

"I bet it did! You're an inspiration to us all my friend."

Thumbkin by MarkHanna June 7, 2021

thumbkin 

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?

thumbkin by RandalPnk October 16, 2007

thumbkin 

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.

thumbkin by Heptune May 14, 2005

Thumbkin 

When someone sticks their toe in your anus while going down on you at the same time.

Kimberly was mortified to hear that Christy let that carnie give her a thumbkin. What a ho!

Thumbkin by GTizzle1386 May 19, 2015

Thumbkin 

Performing the act of splinting on a consensual female partner, while performing oral sex on her. This involves inserting your thumb into her vagina, pushing down towards the anus to help her relieve constipation, while sucking on her clit.

"My lady was horny as hell, but also constipated so I offered to give her a thumbkin. The simultaneous orgasm and poop drove her absolutely wild with pleasure!"

"I bet it did! You're an inspiration to us all my friend."

Thumbkin by MarkHanna June 7, 2021

Cross-Thumbing 

Cross-Thumbing is a technique developed by Dr. Mark Ringwald PhD. and Dr. Nick Pollack PhD. at their video gaming ergonomic laboratories at Brandeis University. The technique is mostly applied when playing the Nazi Zombie segment of "Call of Duty: World at War". The technique consists of controlling the right thumb stick of an XBox 360 controller with one's left thumb while the right thumb is occupied with pressing one of the four buttons above the right thumb stick. The crossing over of the left thumb across the center of the controller, and in said gaming application is most useful while rebuilding barriers in the zombie level's windows to slow down the flow of zombies in the house. The technique allows the player to repair said barrier as well as aim and dispatch targets within the level.

Holly shit Doo, did you see that fucking sick cross-Thumbing stabbing action on that mother fucker? I cut his fucking dome off, NOOCH!!!!!

Cross-Thumbing by Cactus Jack O'Malley March 5, 2009