left hand

I had lunch at the Spice Bowl indian restaurant last week with Joe Barron. I'd eaten there several times before, but it was Joe's first time. Even so, I made my first trip to the bathroom this time. In the unisex bathroom there was a version of the obligatory, "Employees must wash hands before returning to work" sign. This one said:

Employees must wash hand before returning to work

or some such thing.

I had to laugh. So I did.