Montana Milkshake 

The act of shitting into a blender, then emptying your Pony cum jar into it, then after you put the lid back on, press the smoothie button on the blender. When done you have created a Montana Milkshake

Man i took me a fat shit in a blender when i was drunk last night, so i experimented with my mistake and made a Montana Milkshake

Montana Milkshake by JustusH2277 October 5, 2021

montana milkshake 

1. When you give a girl laxatives then you butt fuck her and she poops on your dick and you slap her in the face with your shit covered penis

Guy 1: Dude, PJ and Ginna did a Montana Milkshake at my grandma's house

Guy 2: Dude, thats disgusting

Guy 1: Yea, but Pj said it felt kinda good

montana milkshake by Urban Chaos May 29, 2007

Montana Milkshake 

Close cousin to the Cincinnati Juice Box, except the man releases a load of ejaculate into the woman's anus and proceeds to slurp the creamy mixture out with a bendy straw.

Dude, I totally gave Kevin's mom a Montana Milkshake. Mmmm Mmmm Good.

Montana Milkshake by Feefer May 16, 2008