used to say, "hold up" or "wait a minute" or "thats not true" or to express disbelief.
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!
by ewitsmelala January 29, 2010
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Liz: At class today this boy told me he wanted to get my lovin. Guess what I said!
Kel: What did you do.
Liz: Slow up the train man. Take yo' nonsense, pack it in a suitcase, zip it and manage. Before I kick your booty to tune town. You can even manage the train tell yo crew your nonsense and they can believe what ever you tell them.
Kel: WTH did you just say.
Liz: What my momma would have said.
Kel; (lol) omg your something else
Liz: I know! Now, please let me have a snack woman.
by Wolfdg8mys0ul00lz December 1, 2009
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Where a group of 6 to 10 women get naked and standing form a line with their legs spread so as to form an upside down 'v'. This creates a tunnel of sorts. The woman in the back of the line crawls on her hands and knees giving each pussy a lick until she's reached the front of the line. Then the next woman. In the back of the line does the same and so on and so forth until every woman has been 'serviced' so to speak.
Brigit and Kayla hosted a slumber party over at kayla's house since kayla's parents were out of town. There were about. 15 of us. We played board games gossiped. And ended up. Taking the a train up town
by 4realazitgits April 6, 2021
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