run a train

• run a train on

run a train (third-person singular simple present runs a train, present participle running a train, simple past ran a train, past participle run a train)

1. (slang, vulgar) To subject to multiple sexual encounters with one partner after another, to gangbang
   • 2008, Jody Miller, Getting Played:

     And we went upstairs and we ran a train on her.

   • 2009, Mike Flax, L.A. Unified

     “Hey mister, why don't you leave so we can run a train on Andrea?”
     “Oh my god,” Andrea said. “Erik, you motherfucker! They should run it on your mom!”

   • 2011, A. Vyctoria Abrams, Ava's Diary: From the Very Beginning (page 64)

     He even drove them to a couple of house parties, whereby his partners, along with other boys in the hood, impatiently waited their turn to run a train on consenting young teen-aged girls.

   • 2018, Laura J. Lederer, Modern Slavery: A Documentary and Reference Guide, page 288:

     Sometimes, to punish victims, the gang would “run a train” on a victim, which meant that multiple gang members would have sex with the victim in rapid succession.

• Usually used with on