antony2's definitions
The act of anally assaulting a girl whilst drinking a protein shake, upon completion of drinking the RTD protein shake the male proceeds to place his penis inside the club rats vagina and the protein shake bottle in her gaping butthole.
"dude i protein shaked this girl so hard last night, she wont need her fiber supplement for a week, I fucking love protein shaking!!"
by antony2 August 18, 2014
Get the protein shakingmug.