look up any word, like seattle snorkeler:
 
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.
by Moe Jillionaire August 18, 2007