Poker terminology.
When two players forget about what their cards are and just raise each other back and forth spraying testosterone all over the table. Common sense is never a factor in a testosterone fight.
Sam: What happened to all of Dave's chips?
Matt: He just lost a huge testosterone fight to Devin. Devin's so cool.
Bruce Willis: Yeah, I wish I were as cool as Devin.
by Devin McNasty March 12, 2005
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A man (or young man) whose behavior is driven by the uncontrollable urge to prove that he's "more of a man" than the next guy. Always has to be first in line, always has to be the fastest, always has to drink the most, has to control the room, tailgates and weaves dangerously in and out of traffic to pass people, etc. Basically a Type A personality jacked up to extremes.
That testosterone jockey tailgated me in heavy rush hour traffic for 5 miles, then took a dive across 3 lanes to weave around everyone and almost clipped 2 cars in the process.
by StealthAGC June 20, 2013
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A public display of useless, excessive noise usually performed by a burly biker with a beer belly showing off his loud motorcycle in a public display of faux bravado or cheesy machismo.

Bikers who are proud to frequently let their motorcycles wind out are generally insecure and they feel that letting their motorcycles peel out will compensate for an undersized penis.

There are exceptions as sometimes on occasion, even a frail, young college boy will perform a "testosterone fart" to try to impress his friends or hot girls on campus.
The burly, bearded biker showed off his loud Harley as he revved the engine through the quiet town's main drag, as he sped away when the traffic light turned green. The small town folks were not amused.

The girl remarked, "That guy needs his muffler checked!"

The boy replied, "Nah, that was just some biker dude letting loose a 'testosterone fart.'"
by ZonaCat Hansen October 29, 2010
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When a woman takes testosterone in order to "transition" into being a transman, and encounters the severe physical, physiological and mental side effects from an artificially induced endocrine disorder. Symptoms are not unlike those for abuse of other steroids, of which testosterone is one: irritability, rage, promiscuity, lack of emotional control, violent outbursts, abnormal hair growth, male pattern baldness, damage to fertility, vocal chord damage, skeletal deformation.
A: How is she now that she's detransitioned?
b: She's okay, but it's hard to know the long-term effects of testosterone poisoning.
by TSCX October 5, 2023
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The temporary condition of repulsion and/or nausea at the thought of meeting a new man after an especially bad break-up.
Thanks for wanting to introduce me to a guy at your office, but I'm still dealing with testosterone intolerance from that freeloading slob.
by KRoderick October 19, 2007
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Masculine hormonal energy associated with violence
During the war grandpa was a testosterone-fueled madman killing lots of enemies.
by 7od February 1, 2016
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When a trans woman goes through male puberty and grows facial hair and her voice deepens, etc.
Erika, though she had boobs from taking estrogen and had had all hair facial hair lasered off, was still getting clocked because of her deep voice as a result testosterone poisoning.
by Natalia Boa Vista November 22, 2016
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