A bit of casual hilarity

I was teaching a group lesson in-company this evening, practising adverbs of frequency with a low level and rather slow student.

Me: How often do you eat lunch at your desk?

Him: I often eat my desk.

Cue much hilarity and it was nice to see the chap himself taking it well, slapping his forehead with one of those 'doh' moments. Ah, laughter. Sometimes it's the only medicine that works.