When someone is either overly arrogant or aggressive regarding a topic where that attitude is completely unnecessary. People displaying this attribute will typically fight until the very end, even when what they’re arguing is clearly wrong. They’ll then try to fight you if you tell they’re stupid.
BS: We’re driving my parent’s car — don’t do ANYTHING that burns gas. Good thing the AC doesn’t use any gas.
Person 1: I’m pretty sure it does
BS: No
Person 1: really?
BS: the AC is powered by the alternator, which is powered by the battery of the car, not the engine.
Person 1: and the battery of the car is powered by the engine, which burns gas.
BS: do you want to fucking fight?
Person 1: now’s not the time for your Bullshit Testosterone
(BS then argued with a mechanic about this very topic for a half hour)
Person 1: I’m pretty sure it does
BS: No
Person 1: really?
BS: the AC is powered by the alternator, which is powered by the battery of the car, not the engine.
Person 1: and the battery of the car is powered by the engine, which burns gas.
BS: do you want to fucking fight?
Person 1: now’s not the time for your Bullshit Testosterone
(BS then argued with a mechanic about this very topic for a half hour)
by Gandar Boy May 27, 2024

When guys try to act more manly and macho than the other guys to impress each other. Often leads to idiodocy and dangerous risk taking.
by Harmony1812 September 4, 2019

The gender- and sex-essentialist belief system which states that men are inherently more dominant, powerful, aggressive, or ambitious than women. Usually accompanied by the parallel belief that women are inherently more submissive, weak, nurturing, or delicate than men.
Man: I want to have kids, but I fear I won't be as nurturing to them as their mother.
Women: Don't let the Testosterone Rex get to you, sex doesn't determine how nurturing you are!
Women: Don't let the Testosterone Rex get to you, sex doesn't determine how nurturing you are!
by thedefinerrrrrrrrrrrr April 15, 2025


Basically when you try your hardest to impress guys or girls by acting like a dick to strangers or friends.
by Ron the boss 8 March 13, 2017

Legends say that a man will come by the name of Beef Testosterone to bring peace, justice, and stability to his new empire. Legends also state that he will have the flattest penis known to man.
by Poopycheeks April 19, 2024

A mythical surge of testosterone originating from the testicles, giving an intense boost of confidence, aggression, and primal energy.
After he landed that insane trick on his skateboard, he was strutting around like his testicles were pumping pure Abhi Mehta Testosterone.
by abbhi Mehta December 10, 2024
