Friendship Train 

A group of friends connected together by their genitalia. Typically includes more than 7 people.

Did you see that guy at the caboose of the friendship train?

Friendship Train by dr. not a fat kid January 12, 2012

Dangle Train 

A sick performance in hockey where one dangles multiple times in a row

Steven Stamkos went dangle train on those benders.

Dangle Train by Dirtydangles231 May 23, 2012

Baby-Train 

Having a very high number of children, two children can be very expensive to raise in today's world/economy, but some people have more than 4. This wasn't a big deal in the baby boom post WWII, when we had a population decrease. But in today's economy, and with our overpopulation, it's a really bad move, unless said person is Richie Rich/Daddy Warbucks. Most parents of these baby trains don't exactly look the part of someone who can offer these children a very good quality of life (at least, not THAT many kids..)

The term "Baby Train" refers to the appearance of the parents walking down the street followed in a single-file line up by several kids (or following behind several kids), giving the appearance of a train towing cars. If they're pregnant while having a ton of kids, it is sometimes referred to as the "caboose" for being the last one (in theory) in the line up of "train cars".

It is questionable if these people are ever NOT pregnant, like half the kids were conceived in the delivery room or something. Also theorized that some children are "expendable" in case poor parenting or a freak accident results in the loss of one, they would have a replacement, so to speak.

*sees a parent pushing a double-stroller, with four kids tagging behind, and one in her arms* "Holy baby-train!"

Baby-Train by BJ Blaskowitsch September 30, 2012

Message Train

When you form a chat-like conversation over the email or resend email messages by replying again and again to the same message and you have a long train of emails or messages attached. Also known as a Email thread or Email Train. This can also occur if you are texting back and forth and have a long message train.

Wow.. look at this Message train we have going. It goes back 10 messages. or Dude! I have a message train of about 50 on my iphone!

Message Train by peapod90254 July 13, 2013

dying train 

when a obese person runs out of energy and wheezes like a train whistle

damn foo,that fatass cory is looking like a dying train after the gym run.

dying train by Cory Sanders September 14, 2013

J Train 

A train in NYC that runs from Jamaica, Queens and goes through most of Brooklyn until it reaches Downtown Manhattan Broad St

Also Shared with the Z train which goes express.

Some names of the stops are Woodhaven Boulevard, Broadway Junction, Fulton Street, Jamaica Center-Parsons/Archer Avenue.

Person 1: Yo Meet me at Broadway Junction.

Person 2: ight ima hop on the J train

J Train by Nyckid2 May 10, 2014

Pink Train

Same thing as running a train, except a man (or a woman, if you swing that way) is passed around, eating everyone's pussies, rather than a woman (or a man, if you swing that way) is passed around, sucking everyone's dick. Often used as a form of hazing in sororities.

Tom ran a pink train last night; his tongue was so tired that he could barely speak today!

Pink Train by BrosefTheBroLord May 12, 2015