We made up a name for my O2

We call my O2 concentrator that was donated to me, and I was told that it's okay to wear it by a cardiologist. So, I have seen multiple doctors about it. My Mom and my family have started to call it my "O'Hare Air". I have started telling people that I wear it because they are cutting down trees and there isn't a lot of oxygen anymore, and I need to wear it because I'm especially sensitive to that.

Does anyone else have fun names for their medical equipment?