Another term for male masturbation, especially when caught out in public by women performing that act.
When confronted the suspect explained to police that he had been Mixing A Protein Shake.
Guy #1: Really? Right there in the restaurant parking lot?
Guy #2: Yep, I guess she was still hungry so I whipped up a protein shake.
Very Simple.
Its a healthy way to offer a girl a chance to give you head.
"Hi, oh wow. Your really in shape... How would you like to have a Protein Shake out of a Meat Straw©?"
When six men cum in a girl's vag, hold her upside down, shake her, and then pour the contents into a cup and she drinks it.
Back in my day, when I craved a protein shake, I'd pop over to Belind's house with my five mates and have an australian protein shake.
A beverage made from the cum of Gerald Wang while he thinks about his fantasies of cherries and cumming on Minwoo.
"Where are you getting your nutrition?"
"Oh, I drink my special protein shake once a day!"
A synonym for semen, used in College Station Texas and at UC Davis
Tiffany decided to top-off on some Aggie Protein Shake after the big UT/A&M game.
My Tinder date loved my late night protein shake, she took it all in one swallow.