5.40 in the evening. I feel knackered, but I've still got another 3 hours plus to go before I can weave home on my bike, avoiding the traffic. If there is any justice in this world, the fire alarm will go off mid-lesson, and I can escape to a pub or something. Actually, scratch the pub: I just need to curl up in a bed and sleep for a good twelve hours. Lesson today: not too bad, actually, tho the class screwed up at lunchtime. For some reason, they stopped listening, and I had to curtail the exercise and let them eat.