Where a usually slutty girl, often drunk, gives it up to a somewhat large number of guys, one after another after another. Metaphorically speaking, the girl is like a urinal, just instead of urine, the guys using her are relieving themselves a little differently.
Guy 1: We're running trains on these girls in the bedroom.
Guy 2: Can I get in on that?
by amadhatter53 October 11, 2005
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A heavy transportation vehicle which travels on rails.
Gerald: Stop jacking off, we're gonna miss the fucking train!
by alee2006 June 26, 2018
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Having to do with a girl giving it up to a whole bunch of guys at the same time, called "riding trains"
Ieba J. Romeo Rides Trains all da time
by Double G himself July 26, 2004
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Two or more male persons stick their dicks into others asses. Doesn't require sleeping.
We trained 3 hours with boys yesterday.

I couldn't go to work 'cause I got stuck in a train
by Pietari January 16, 2004
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5 to 7 men have sex with one women they
only get 1 pump
by Anonymous August 19, 2003
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