When 4 people do something sexual with each other in one night. Similar to a three sum but with 4 people.
by baddassbailey January 6, 2018

"Whats goin on guys, nought here and today we are gonna be trying to stop the train in gta five, i know its my one-thousandth video on this topic but i am confident we are gonna do it today
by FatAlcoholicYoda October 3, 2020

A sexual act, irrelevant of orientation, in which one partner, henceforth referred to as "The Conductor", performs intense anal sex with the other partner, "The Caboose", to completion.
Upon completion the Conductor removes their phallus from the Caboose's sphincter, which at this point should be sufficiently gaped enough for the arrival of the next train. The Conductor then turns around and sits their buttocks of the Caboose's rear, and proceeds to defacate into the Caboose's gaping "station".
The Caboose will then push the train back into the Conductor's own asshole, and the pair will go back and forth until a second climax is reached, at which point, the climaxing partner will shout "ALL ABOARD!"
Upon completion the Conductor removes their phallus from the Caboose's sphincter, which at this point should be sufficiently gaped enough for the arrival of the next train. The Conductor then turns around and sits their buttocks of the Caboose's rear, and proceeds to defacate into the Caboose's gaping "station".
The Caboose will then push the train back into the Conductor's own asshole, and the pair will go back and forth until a second climax is reached, at which point, the climaxing partner will shout "ALL ABOARD!"
"Judy and I got a bit freaky last night and took a trip down to the ol' Detroit train station."
"I was feeling a little empty until Bill and I went down to the Detrot train station last night, now we're both pretty full."
"I was feeling a little empty until Bill and I went down to the Detrot train station last night, now we're both pretty full."
by Jetscream November 4, 2023

A freight train is a hockey player that is so strong and aggressive that they completely run over anybody who gets in their way. A freight train will not only lay you out when you have the puck but also run you over if you try to get in their way or hit them when they have possession.
Guy 1 - "Dude, Ben is laying out their whole team."
Guy 2 - "I know, buddy's a fucking freight train."
Guy 2 - "I know, buddy's a fucking freight train."
by SunnyB31 August 9, 2024

People who enter a train and get stuck at the door forcing everyone else to have to squeeze past them even though there's ample space further inside the compartment. Sort of like lint in the dryer.
See also, train lint catcher - a person who yells at train lint to move further in and stop blocking the door.
See also, train lint catcher - a person who yells at train lint to move further in and stop blocking the door.
Man there was so much train lint on the 9:02 this morning, I feel like I've been in a mosh-pit. We could've really used a train lint catcher.
by jeamish February 25, 2021

Whal3r, Keenan, LLamazing and especialy Razerzzedge are official members of the Bro Train! The Ultimate Shitters!
by Llamzing Suga February 20, 2023

A nut train is when you and your bro's all line up and ejaculate on girls face without having sex with her
Male 1:bro I just ran a nut train on my girlfriend last night with the boys
Male 2: I know bro i was there
Male 2: I know bro i was there
by sara fresher June 22, 2019
