Phone call at 2.20pm:

'Hello, is that Billy?'

'Yes'

'This is Anna. We're sitting in class. You're supposed to be teaching us just now?'

Yes, I'd got the time wrong and was sitting in my office discussing an MA application with another student. I'm impressed that the students had the initiative to chase me up. And I enjoyed the round of applause when I finally showed up.

B-)