Not pleasant and a bit dirty

If I got locked in my office in a freak accident and couldn't escape, I wonder how long I could live on the bits of breakfast/lunch/dinner that are secreted between the keys on my computer keyboard?

Perhaps this is a potential research project? Unless, of course, the final research outcome is death. In which case, I'm not so sure.

This evening, I am going to a beginner's tap dancing class. Watch me as I step-ball-shuffle off...