SO I use an oxygen concentrator at home. I currently have a DeVilbis 5-liter model, but have had others. They all seem to have a similar look to them. They make humming, whirring sounds, they have little lights on them, and they beep to indicate certain things. SO I decided it needed a name, so...O2-D2.
Breathes with this, he does. There is only breathe or not breathe.