When you and your bro finish a hot sweaty gym session then trade blowjobs after the gym to release your tension. Added benefit of getting extra protein to fuel your muscle growth.
After the gym, my friend gave me a brotein shake straight from the tap. Delicious and my muscles are looking huge!
by Brotein69 August 14, 2022
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Muscle Milk protein powder mixed with vodka. Typically consumed by Bros and Frat Guys post-workout.
"Bro, I've got to go pound my Brotein Shake so I can get swole."
by KR0N0SXx July 6, 2012
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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"
by I'vefallenandIcantgetup May 22, 2019
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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!!!
by xcbrit91 August 7, 2011
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a protein shake with organic ingredients such as organic milk, and semen.
"after my workout today, I needed a little pick me up, so I drank some brotein shake.
by thee hammer October 8, 2007
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A brotastic beverage typically consisting of vanilla protein powder, orange juice, and Smirnoff Ice that is often consumed by a bro after a workout or when chilling at a brodeo.
Bro: Hey brosef, you tryin' to 'cube later?

Chad: Yeah brohan, let's chill right after I lax and have my brotein shake.
by n8pants September 22, 2010
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