What is Montana Monorail?
1.
When you're in an intimate setting with someone and one of you poops into the other's butt-hole and they take that same poo and poo it back into your butt-hole. And back and forth until you decide to stop.
Me and my girlfriend decided to ride the Montana Monorail if you know what I mean.
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Random Words:
1.
(n.) the exterior portion of one's anus; the rectum; an asshole.
Ned: Good God, the toilet paper in the staff restroom is coarse--..