blue milkshake
some guy: hey dude, i was having sex last night and my gf had a blue milkshake
when you jizz inside a woman who then proceeds to shove her fingers inside her gooch as far as possible and eat the remaining jizz
"some guy: hey dude, i was having sex last night and my gf had a blue milkshake" What is the definition of "blue milkshake"?