Protein Diet 

The act of ejaculating in someone elses mouth, thus giving them an ample serving of protein.

Dude, after she was done blowin me last night I put that bitch on a protein diet.

Protein Diet by AstrosFan4Life February 19, 2009

protein diet 

A diet consumed by a person, only served to them by a man. Purpose is for weight loss. The only sustenance is provided to them by their male partner ejaculating in their mouth.

My bitch's ass was getting big so i put her on the protein diet.

protein diet by jmhunter July 7, 2010

liquid protein diet 

Swallowing enough semen to be able to subsist solely on that intake.

Kevin's eyes widened dramatically when he saw Stephanie remove her dentures; and he purred with pleasure as she next informed him that she'd quit Weight Watcher's to try the liquid protein diet instead.

liquid protein diet by Niemand of Chaos March 29, 2005