An activity usually involving multiple males and one female. The males usually take turns fucking the female and just then switch off after they get their nut in. An avetard gets extremely horny all the time and always thinking of this activity with any female he sees.
"AYE WHO TRYNA RUN A TRAIN ON JULIA?"
by TurnM3Up November 12, 2019
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A group of guys stand in a line outside a room. One by one, they enter the room to have sex with one girl inside. The line must have at least 7 guys to be qualified as a train.
"What's this line for?"
"We're running a train! Go to the back of the line."
by bigbadbob February 25, 2003
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To "run a train" in sexual terms means that a group of men wait to have sex with one girl. Usually it does not qualify as a train unless there are more than 7 men involved but the term train is used to describe any number that is more than 1 with a female. The female has sex with a man and after he cums another man enters the room to have sex with the female and so forth. It is only considered a train when the woman is fully aware of the situation and allows for the men to have sex with her. Otherwise it would be considered rape.

Differs and is often confused with gang bang. Train involves sex with one person at a time while gang bang is when a group of males having sex with a female at the same time.
"Shorty right there is a true freak. Me and my boys ran a train on that trick the other day."
by m-t-a July 1, 2006
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Something Bruno Mars would jump in front of.
I'd jump in front of a train for ya
by Gnar456654 March 31, 2011
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When a girl have sex with more than one guy. Normally guys would line up or wait for one another to get done. Participants would go in the room one by one to have sexual intercourse with one girl.
Guy: wassup witchu ?
Thot: nothing ..you still want me to slide?
Guy: yeah but my manz here....u goin help em out?
Thot: what you mean?
Guy: you goin let us run a train?
Thot: I mean ....I guess
by Hood nigga😎 August 12, 2016
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the single greatest thing in the history of the universe, trains are a glorious and godlike means of transportation. there are multiple ancient cultures built around the worship of trains, going back as far as 5000 b.c.
Priest:" all hail the great train"
all" hail the great train who gave us life and all that is important to us."
priest"thank you, great train"
by linuxlinux September 29, 2020
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To be "on the train" means to be single and in pursuit of someone to spend the day and/or night, without the intent of perusing a relationship with that person.

On Valentine's Day the only way to "get off the train" would be to find a date, to give up in the pursuit of finding a date or when the clock strikes midnight and you're all alone.

Related: To be on the desperation train / To be on the train of despair / To be riding the train.
- What are your plans for V-day?
- I'm on the train this year.
- No worries dude, you'll be off the train way before V-day.
by a66spam February 2, 2014
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