biPolar Express 

The emotional roller coaster that our loved ones put us on at their whim.

My boyfriend and I broke up and got back together 5 times this month. I feel like I'm on the biPolar Express.

biPolar Express by MissJames January 22, 2011

Bipolar Express 

A term used to describe child development classes in high school

"Did you see that train-wreck in child development today?"
"Yeah, Talk about the Bipolar Express"

Bipolar Express by Once Upon a Lemon December 16, 2016

Bipolar Express 

The depressing version of the Polar Express

Guy 1: "Man, life's so depressing right now."
Guy 2: "Dude, just take a ride on the Bipolar Express, it'll fix you up"

Bipolar Express by "KidFriendly-Yeet" January 17, 2019

riding the bipolar express 

Descriptive of a person with personal issues involving mood swings, unpredictable disposition - similar to those caused by bipolar disorder or schizophrenia.

Him/her? Seems nice, but is riding the bipolar express...one day she'll hug you and the next day bite your head off for no apparent reason

riding the bipolar express by Jerome Engelberts July 12, 2007