If you're on disability what do you say to people who ask what you do or where you work?

I ran into one of my old high school classmates and first I told her or implied I work, but then she asked where and I had an oh **** moment, so I quickly back tracked and said I was a stay at home mom (I have a seven year old daughter so it wasn't really a lie).

It was just so awkward. I had a panic moment!

What do you guys say?