on a hinge 

Being left in a state of unknown. Expected to pivot and go in any direction at any time. Last minute scheduling and schedule changes resulting in conflict in every day life.

I might be traveling to the other side of the world this week but my company expects me to live life on a hinge because that won't be confirmed until I either receive my airline ticket the day before or wake up at home the day after the project starts.

on a hinge by AriaHero November 6, 2019

Balls on a Hanger 

"Balls on a hanger" is used to indicate that something is really awesome, sometimes in a unique or special way. The phrase can be shortened to "boah," which is pronounced phonetically.

The turkey sandwich from that shop is totally balls on a hanger; they use avocado and horseradish sauce and then toast it.

Balls on a Hanger by TC-Jon September 28, 2010