Crossposts:

http://badgerbag.livejournal.com/507878.html

This worked well today. Lady on bus, asking me really loudly, "What's wrong with your legs?".

I smiled and answered equally loudly, "If only it were that simple!"

"What?"

"I said, if only there were a good answer to that question!"

She was extremely confused and began to ramble about skiing.

Moomin developed a huge smirk. When we got off the bus he went "Mom you totally owned her!"

It was satisfying, not obviously rude, and saved me from having to say "I would prefer not to explain all my medical history to some stranger on the bus."