A Backdoor Milkshake is when one proceeds to insert any sort of liquid into the rectum of another person via any means, then the recipient of said liquid proceeds to fart out the liquid, leading to a squirting phenomenon.
Two lesbians enter a bathroom. One lesbian pulls out a metal syringe full of milk, the other bends over, and receives this gift of strong teeth and healthy bones right up her ass. She then squirts it out of her bum and the other lesbian catches the milk in her mouth. That's a Backdoor Milkshake.
by Mr. Perversion January 28, 2009
While performing sexual intercourse, the male inserts a banana inside the female's anus. This is typically done in the ever famous "doggie-style" position. Once the male is prepared to ejaculate, he removes his penis from the vagina and ejaculates around the banana, which is still inserted in the anus. Banana milkshake, ladies and gentlemen.
Last night, Jo-Anne and I were feeling quite sexy and she said she was very hungry as well as very thirsty. I told her I would give her a banana milkshake. She was quite surprised, yet pleased with the outcome.
by famousb13 October 4, 2009
A sexual act originating in New Jersey in which the giver defecates in his/her hands. He/she then proceeds to rub said shit all over the recipient's breasts in a vigorous, circular motion. The giver then adds the finishing touch of a smooth, creamy cum concoction to the rich, dutch cacao. The ingredients are swirled and mixed together once more, creating a most delicate medley of sinfully rich flavors and leaving wide grins on both partners' faces.
Vinny: Ay yo, Steffie's been acting like a fuckin' bitch all day.
Joey: I've got just the remedy.
Vinny: What?
Joey: Bitch needs a nice jersey milkshake!
Vinny: Ay!
-Fist pumps all around-
Joey: I've got just the remedy.
Vinny: What?
Joey: Bitch needs a nice jersey milkshake!
Vinny: Ay!
-Fist pumps all around-
by boobletits May 4, 2010
A sexual act involving anal sex in which one person ejaculates into another's rectum. That person then proceeds to pass the semen back out of their anus and then eats it.
"She just had a dirtpipe milkshake."
by jl;kjl;jk May 18, 2008
Similar to the Sacajawean Smoothie, but with more of a Mexican flair. This sexual act involves the stuffing of a females mouth with typical Mayan foods such as corn, black beans, guacamole, salsa, red (or green) peppers, and other extemporaneous foods that are at your disposal. Once the mouth is properly stuffed, the male then places his erect genitalia inside said females mouth and "blends" the milkshake with his manhood.
by Marty Feinstein March 10, 2011
by Lauren & Val September 20, 2005
Mescaline added into a milkshake, unsure of how many parts mescaline to milkshake. However it's much easier to consume if you have a weak gag reflex, and it will hit you just as fast and the same duration.
"Dude I just saw an ad for Jack in The Box milkshakes! We should totally go and buy some and make some yummy mescaline milkshakes!"
by pyropheliacdreamer February 19, 2010