Top definition
An expression used to stop something or slow it down. If someone is talking fast, backup the train will mean for them to repeat what they said. Can be used with hold the phone
Kids in a classroom going crazy, someone swears
Teacher: Hold the phone, backup the train! Who said that?
Teacher: Hold the phone, backup the train! Who said that?
by Don C. Hawantme May 31, 2007
Jul 22 Word of the Day
Short for ultimate bias. Typically used by fangirls and fanboys to describe their favourite celebrity amongst the many that they are fans of.
G-Dragon is my ult
by Uglycat February 19, 2017
2
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