The nasal version of a rainbow kiss. I.e. snorting through a straw.
Dude, the girl tried to rainbow kiss me so I gave her a pasadena milkshake instead
by Pasadena Milkshake April 9, 2016
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When you find out your partner is cheating so you go give all his male friends a blow job, save the outcome in a bottle, and give him a big mouthful of his friends.
Harrison cheated on me so I took him out for a family milkshake!
by Pettysweetness July 20, 2023
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A Sour Milkshake is when you jerk off onto a sad girl.
My girlfriend was depressed last night so I gave her a sour milkshake.
by April 8, 2021
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An activity for scat fetishists - involving a blender, a cup of milk, and a log of somebody’s feces. After it has blended, it’s poured into a funnel that was shoved up somebody’s rectum.
“Yo, it smells like shit. What did you two do last night?”

I had a Nutella Milkshake with my wife.”
by Artyphaggot May 26, 2023
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Two people, any gender, typically experimenting in Scatophilia or Coprophilia are the type to participate. The practice involves both partners on hands and knees facing their butts together. One partner squirts preferably liquid feces into the others booty hole. Then the partner shall twerk till mixed.
oh you booked the Sandles hotel for your honeymoon? Will you dabble in the Jamaican Milkshake for the occasion?
by eiboobyknits0003 May 8, 2023
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chocolate spunk gargle...not too creamy...not too chocolatey....not too spunky...just right
You’re hersheys milkshake is not too creamy or chocolatey. It’s not even too spunky, it’s just right
by Big gav 123 December 10, 2019
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