Brotein is a bodily chemical that is excreted by the pancreas that creates a euphoric sensation. Brotein is released usually whilst throwing down at a rowdy Pop-Punk and/or Hardcore show.
by zsteezy August 20, 2009

by Jack Richards March 7, 2017

Noun;
An aura of overwhelming masculinity, testosterone, and gym bro energy. Often used to describe people who like to refer to themselves as alphas and flex their gains to their bros and can be seen boasting about how much they get laid regardless of how much they actually get laid, and how fucked up they got last weekend.
An aura of overwhelming masculinity, testosterone, and gym bro energy. Often used to describe people who like to refer to themselves as alphas and flex their gains to their bros and can be seen boasting about how much they get laid regardless of how much they actually get laid, and how fucked up they got last weekend.
"I couldn't stand the amount of brotein at the Kappa Sigma Ligma frat party last week, Jarryd was benching the kegs whilst chatting to Stephany, Bethany and Methany."
by Peliwang January 1, 2022

by gavin_pm February 9, 2006

the protein one gets from swallowing after fellatio. or simply, the protein contained in semen that can be ingested when giving a blow job.
"hey hon, your hair isn't looking so shiny, lemme give you some brotein!" (high fives any surrounding buddies)
by cayb March 14, 2010

The powder supplement that is taken to increase muscle size, decrease penis size, and make you an instant douchebag.
by Nik P. February 8, 2008

by SubAtomicBear July 28, 2016
