The Kentucky Thumb is a sex position in which you stick your thumb in your partner's ass and/or vagina while she's cumming. God may disapprove, but Mat will be happy.
*Wife comes home.* Wife:"Can we try something new?" Husband:"Howabout the kentucky thumb?" Wife:"What's that?" Husband:"You'll see."
by GodIsDead123ABC May 20, 2021

When one inserts his/her thumb in their own ass and then asks a friend/co-worker/boyfriend/girlfriend etc. to smell the thumb.
by V. Price October 24, 2006

1) A sign of approval.
2) Also a insult equal to the middle finger in some cultures (namely the middle eastern ones, where you saw pics of iraqi children giving the thumbs up to american soilders)
2) Also a insult equal to the middle finger in some cultures (namely the middle eastern ones, where you saw pics of iraqi children giving the thumbs up to american soilders)
by Dr. Eazy-Cheeze June 12, 2009

When a man attempts to put his hand down his lady friends skimpies and is stopped by her pulling his hand away, while using his thumb like a handle.
by LL-Unit November 24, 2010

by yorkie stomper July 10, 2008

by numbthumbed April 29, 2011

by Hercolena Oliver April 9, 2009
