Train yard 

When a set of at least 30 guys (maybe more) run train on a chick. You have 10 sets of 3 guys gangbanging the woman. When the first set of 3 are done then the next 3 go on, so on and so forth till they are done

Bitch we gonna train yard yo ass

Train yard by A. Blinkin' April 9, 2008

Train-yard Blast 

A sexual act that involves using a model train set to be involved in love making such as jamming the model train conductors into the urethra or fitting the entire train with its cabs into the vagina

It can also be described as thrusting extremely hard while having sex, screaming at the top of your lungs "CHOOOO CHOOOO" and cumming all over said persons face, ass or vagina

I think me and Cindy are gonna do some Train-Yard Blast tonight"

Train-yard Blast by FingerPuncher May 30, 2017

Mel Gibson in a train-yard 

Adjective

refers to treating someone or something bad or with disrespect. It is a reference to the fact that Mel Gibson as a young man was involved in a train yard accident and needed re-constructive surgery.

I'm going to treat you like Mel Gibson in a train-yard!

Damn, they treated that pizza like Mel Gibson in a train-yard!

Did you see the fight last night? That guy got treated like Mel Gibson in a train-yard.

Mel Gibson in a train-yard by Andrew from 'consin March 3, 2008

Traintard 

When you get on the wrong train. You're a Train-retard (traintard)Made even worse when you're mistake costs you more money and time.

ahhhhhhh, I was supposed to get on the Livingston train and this one is going to Paisley, man I'm such a Traintard

Traintard by Kirstyphoenix August 2, 2010