A Game Where you cuff Your Hand and Your Enemys Hands into One, both Lifting Your Thumbs And say '1,2,3,4, i declare a thumb War!!'(maybe something other) and try to pin the enemys Thumb under yours. You may only use 1 hand. the winner who pins his enemys thumb down for a short time(5-10 seconds) wins the so called war.
Me And austin Had a thumb War last night, i totally owned him.
by Sythex June 18, 2007
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On urbandictionary, a thumb war consists giving your own definition a thumbs up and giving a rival's definition a thumbs down on a daily basis while said rival does the same for himself. A thumb war is won when one of the contenders forgets to vote and/or gets a life.
I hope the addition of this definition doesn't provoke a thumb war.
by y=mx+b January 24, 2009
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When you and your girlfriend/boyfriend inch your thumbs closer to each other’s anal cavity until penetrated. Whoever yells mercy first loses.
Yeah bro, me and Kaylee did play “Thumb War”. Too bad she won.
by Childo Chief October 15, 2019
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When a man inserts one thumb in a woman's vagina and another in her asshole and twiddles his thumbs.
Mike could not win the thumb war while playing with Jenni last night, but Jenni won.
by TopThree October 6, 2017
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Texting battle; Fighting through text messaages; Sending and receiving mean, nasty negative text messages back and forth with someone.
"Ashley and Derek were engaged in a nasty thumb war last night."

"Damn, that was a ugly thumb war!"

"You should see some of the outrageous things Caitlyn wrote to Carrie during their thumb war. She definitely won that one!"
by JacDod August 16, 2011
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When you play thumb war, but with your toes.
guy 1: dude can we play thumb-war?
guy 2: yeah gimme your hand
guy 1: nonono its with our feet
by Sidewhore January 31, 2018
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An age old tradition in the Canadian province of Quebec. This means of competition involves two combatants, the first competitor to shove his thumb up the other's anus is the defined victor. The provincial champion also gains the honor of being the leader of Quebec's Bloc Québécois Party.
"My father will not admit that I am a man, I will defeat him in a québécois thumb war." - Jim

"Mario Beaulieu is an idiot, I wish someone would just challenge him to a québécois thumb war already" - Jean
by OrangeChocolate July 20, 2014
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