when you form a chat-like conversation over the email with one or more people by simply replying again and again to the same message. Each reply is usually a question or something thought-provoking, prompting the other person to respond as well. They can get pretty long.
"dude, here they don't allow chatting on the school computers, so i usually get by talking to her with these huge-ass email trains each morning."
by Ghostface-killah June 3, 2007

When youre a kid and dont have big tits this is what you wear, its worn for the sake of wearing a bra rather than anyhting else.
by edwina April 8, 2005

While having sexual intercourse with a women from behind, doggy style. You hold onto her hair, with every thrust you yell "Chugga, Chugga, CHOO-CHOO" and slide forward in a complete circle.
Guy 1: So how was it last night?
Guy 2: Amazing! I ran the D Train on her all night, wore out a path on the carpet.
Girl 1: what did you do last night?
Girl 2: Took a ride on the D Train, best ride of my life.
Guy 2: Amazing! I ran the D Train on her all night, wore out a path on the carpet.
Girl 1: what did you do last night?
Girl 2: Took a ride on the D Train, best ride of my life.
by BoomSon May 24, 2014

When a few guys line up with their pants down and one girl gives each of them a blow job one at a time in order.
by angela May 13, 2005

Used in a Toby Mac song refering to the "Jesus train" and going to heaven parts of the song say "I got a ticket to ride to the other side" ,"ride ride wanna ride on the J-train"
by JesseWHO? April 15, 2006

In reference to a popular cartoon on public television.
When a younger woman has sex with multiple male partners at the same time, all of them being much older than she is.
When a younger woman has sex with multiple male partners at the same time, all of them being much older than she is.
Joan: Can you believe Becky ditched us at the bar last night to hang out with those old dudes?
Grace: Yeah, I bet she totally rode the dinosaur train.
Grace: Yeah, I bet she totally rode the dinosaur train.
by Samurai of funk September 24, 2011

To Inflict much pain on another peer for cock-blocking you. Usally done in the form of a tackle or smack.
by Tin2100 June 7, 2007
