When you add a little to much bro in your morning protein shake, it scientifically proven when one adds to much bro into their shake it is no longer classified as a mere protein shake but it becomes a brotein shake.
Son: "I accidentally put too much bro in my shake and now it's a brotein shake, i'm sorry Mom."
Mom: "You are the physical representation of a frickin mistake, Kevin"
Mom: "You are the physical representation of a frickin mistake, Kevin"
by I'vefallenandIcantgetup May 22, 2019

Natty plus whey protein mix! Whats better then working out and building muscle? Working out and building muscle while getting drunk!! And nothing is better to get drunk with then Natty!
Bro 1: Pumping iron has made me thirsty, lets grab a protein shake.
Bro 2: Even better bro, i got a Dirty 30! Brotein shakes.
Bro 1: Brotein?
Bro 2: Protein + Natty = Brotein!!!
Bro 2: Even better bro, i got a Dirty 30! Brotein shakes.
Bro 1: Brotein?
Bro 2: Protein + Natty = Brotein!!!
by xcbrit91 August 6, 2011

Another word for cum
by The Brown Recluse April 10, 2022

A potentially sticky situation where both you and your best bud are close and your mutual friends think you're both str8 because you have girlfriends, but you're actually surreptitiously meeting for gay/bi sex aka a brotein exchange. These hook-ups include alot of sucking each other off and swallowing each other's loads in addition to mutual foot worship.
When the girls thought we were spending the weekend at the shore, we were actually engaging in a brotein exchange at a motel down by the airport.
by Watchinfool September 20, 2023

Chad: hey bro, how much brotein is in that brotein bar?
Zeus: bro there’s 25 grams of brotein in this
Zeus: bro there’s 25 grams of brotein in this
by DylanOshowe January 10, 2023

Bro+protein shake= brotein shake.
/ˈbroʊˌtin ʃeɪk/
It's another way to say bro, when feeling tuff or sum.
/ˈbroʊˌtin ʃeɪk/
It's another way to say bro, when feeling tuff or sum.
by ghostdih June 5, 2025

A potentially sticky situation where both you and your best bud are close and your mutual friends think you're both str8 because you have girlfriends, but you're actually surreptitiously meeting for gay/bi sex aka a brotein exchange. These hook-ups include alot of sucking each other off and swallowing each other's loads in addition to mutual foot worship.
When the girls thought we were spending the weekend at the shore, we were actually engaging in a brotein exchange at a motel down by the airport.
by Watchinfool September 20, 2023
