by keiland b February 07, 2009
When a group of three of more people (regardless of gender) take turns preforming or receiving sexual acts from one person( of any gender)
Brett’s girlfriend gets angry when hangs out with his friends even though she lets lots of guys run a train on her daily
by Snailbob September 12, 2020
Can't be less than 4 males + 1 female in VOLUNTARY sexual intercourse NOT rape or any of that chump sh*t
by PhillyNigga12inches February 04, 2006
by NeverlackinZack September 26, 2016
by Elmo June 11, 2004
When two or more individuals partake in sexual intercourse with a female. This reference is usually always used to mean such an act, but also can refer to taking a non-stop shit within a toilet, or any other activity that involves a certain degree of persistent that it becomes evident that it takes as long as a train to get the job accomplished.
I was running a train last night on my girlfriend.
"Was Aaron just in the bathroom running a train?"
"Was Aaron just in the bathroom running a train?"
by Josh FTW December 01, 2007
by Turckypusymann September 26, 2016