a girl's period.
she's crazy, and to make it worse, her m-train hasn't come yet...let's ditch her and egg some random persons house because we're brainless idiots!
by dude...somebody knows! November 6, 2003

Leah: "Girl, my man ain't acting right!"
Valerie: "whatchu mean?"
Leah: "Jose doesn't close the cereal boxes or put the toilet seat down!"
Valerie: "Girl quit complaining and TRAIN YOUR DRAGON!!
Valerie: "whatchu mean?"
Leah: "Jose doesn't close the cereal boxes or put the toilet seat down!"
Valerie: "Girl quit complaining and TRAIN YOUR DRAGON!!
by The_Real_Beaner September 20, 2015

The cops was about to get my ass so I yelled, "I Shit Trains!" And by the power of the Unknown I shat a train that derailed another train and killed dem.
by Anonymous Train Shitter December 21, 2008

One, usually a young girl, who is kind and cute but has a mean side and evil streak. Thus, when somebody so potentially cute acts maliciously, they are excused as being a little "sweet heart in training" or a little "S.H.I.T."
Please forgive my Sweet Heart In Training for drowning your cat. We are working on her manners, the little S.H.I.T.
by SeanDogg21 May 9, 2011

some bitch: You ran your mouth to your parents, and now your living in a camper. You sure know how derail the gravy train.
some dude: I don't care if they own estates in Europe, the West Indies and America. I do miss my Ferrari Enzo, though.
some dude: I don't care if they own estates in Europe, the West Indies and America. I do miss my Ferrari Enzo, though.
by Cunty Fresh Fanatic November 15, 2010

When someone places themselves upon a railroad track and then takes it in the ass, and as the train hits said person, they clench and take the ass fucker for a ride.
by Jimblo February 16, 2008

1. A loud girl, Joanna is talking to a boy, Liam for the first time:
Liam: you seem really quiet Joanna
Joanna: Back up the Train! I never shut up!
2. Joanna is talking to her friend Lisa later that day:
Joanna: so I talked to Liam today!
Lisa: BACK UP THE TRAIN YOU LUCKY DUCK!
3. Lisa is talking to Rebecca later
Lisa: Rebecca you're kinda annoy-
Rebecca: Backup the train & don't let that thought out of the station!
Liam: you seem really quiet Joanna
Joanna: Back up the Train! I never shut up!
2. Joanna is talking to her friend Lisa later that day:
Joanna: so I talked to Liam today!
Lisa: BACK UP THE TRAIN YOU LUCKY DUCK!
3. Lisa is talking to Rebecca later
Lisa: Rebecca you're kinda annoy-
Rebecca: Backup the train & don't let that thought out of the station!
by ewitsmelala January 28, 2010
