Blind date, set up by a friend of a friend. Guy was already sat at the table, didn't get up to greet me when I arrived, which didn't give a great first impression.
Asked the usual questions about hobbies, job etc. Every question I asked about what he liked doing was a form of, 'I don't go out much, I just tend to stay in and watch TV'.
So when the bill arrived, I told him that it was nice meeting him, but I was interested in meeting someone with a bit more 'get up and go' about them.
About 5 minutes later, he excused himself to go to the toilet, reached down for crutches, that were concealed on the other side of the table and this was the first point in the evening where I realised he only had one leg.
On the one hand, cringe but on the other, I was annoyed that he'd not somehow highlighted this whilst I was going on about things like, "I'm trying to get back into hiking and camping, would be great to know more people to do this with, interested?"