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the competitor who is at a disadvantage or picked to lose the competition
They are the underdog's in the superbowl
by Kevin M. M November 30, 2006
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9
Noun: A sexual act typically performed during three way sex where the female is receiving vaginal or anal sex on all fours (doggy style) while the third party lies underneath and licks or otherwise performs oral sex on the female and possibly the male concurrent with their intercourse. The third party may be either female or male.

Verb: To perform oral sex on a female and possibly also the male while they are having intercourse (fucking).
Bro, I was banging Kristen last night and Linda underdogged us. It felt like getting pussy and head at the same time.
by Mikey607 February 17, 2013
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10
Sexually pleasurable act of a woman fondling a man's testicles/scrotum during intercourse in the doggy-style position.
We were doing doggie, hips smacking her ass balls swingin', when she reached back and underdogged me! Almost exploded right then and there....
by Surly T January 28, 2010
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11
someone who rises to the top and proves everyone wrong but in the beginning gets no attentions or hint of their goal is being done or sum..
sasuke is a underdog thought the show Naruto.

Naruto isn't the underdog....this is just a joke peeps dont get tight
via giphy
by justwantmesomewaffles January 25, 2018
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12
a person who is unlikely to win in a competition or is at a disadvantage
He was the underdog but he came out on top anyway.
by The Return of Light Joker October 25, 2008
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13
1. To be under a dog.
Person A: (Gets under his dog) Look everyone! I am an underdog.
by Kaycikay October 24, 2006
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