Sexual act involving masturbating a girl, then having hand fall into the vagina without much effort. Man then begins to make thumb war motions inside girl. Works best on a loose girl.
I was totally getting it on with Darcy, and I put my hand down there, but it was a total one man thumb war not even a minute in.
by Kegan Godbey August 16, 2005
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An insulting shakespearean gesture akin to giving someone the finger which is gaining precedence with Arts students in university.
"Hey man, don't be an ass. People shouldn't bite one's thumb at one another."
by HelloBobbo October 10, 2005
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this is seen when someone has made a really really bad defintion or defined a word that really need not be defined but feels so alone in the world and doent want to seem unpopular so they VOTE FOR THEIR OWN DEFINITION. this results in a mear 1 THUMB UP and makes them look better. it is also obvios to the common joe that people who do this arent that smart in the noggin as they would make themselves look much better if they voted for it MORE THAN ONCE!
kenthars description of caps lock and the one below it
by James Watson December 9, 2004
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Lacking the ability to apply mechanical skills intelligently.
Example: Driving with your thumb up your ass.
Example: Driving in the passing lane while everyone is passing you.
I passed a one thumb driver on their cell phone who didn't have a clue they were holding up traffic.
by Skate38 August 29, 2008
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a brown haired slut who has no fingers with the exception of one thumb and is going nowhere in life. she will typically have a bastard child.
"oh my god... Sarah is such a one-thumbed whore."
by TJH1365 October 30, 2007
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The fifth person on one's list of sexual partners.
1: Hey dude what happened to you last night?

2: Oh dude, I got one for the thumb.

1: Awesome, bro!
by Pittsburghlady September 19, 2011
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'I love you' in sign language.

a medium used to express your love for someone without voicing it out.
'2 fingers and one thumb' Tony showed his mother. Not that would be the last time she would get to see him do that.
by whoissanti? October 14, 2022
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