Top Definition
when a girl gathers a bunch of guys and has sex with them one after another
oh dayam! bree got on that choo choo train last night? what a slut!
by nibbs July 18, 2006

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A long line of gay guys having butt sex
Dude yesterday I decided to join a choo-choo train and now my butt hurts
by Jerry and B-Dude February 06, 2009

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When two homosexuals choose to play the rodent game (sticking a rodent into one's bum) and they put a tube between the two, the partner with the rodent inside him farts in order to try and get the rodent to run into his partner's bum.
Wow! did you see that hamster run from Frank's bum to Steves? that was quite a choo choo train
by synister shadows April 25, 2006

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When a dude fucks a girl, while she bangs another girl with a strap on.....

the center chick could also be swapped for a tranny.
Our threeway quickly escalated to a Choo choo Train. We didn't finish until the train hit the station
by Good times all the time May 07, 2017

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