Not my best day

I didn't get a good night's sleep and this made me cranky and confused. How much? Read it here:

I wandered around school in a daze and felt absolutely naked because I had left my watch at home. I had to keep asking my students for the time and got slightly bewildered stares in return and reluctant answers. I registered the odd looks, but couldn't quite figure out what was wrong. I also moaned about my missing watch to some of my colleagues.

Two hours later, I needed to know the exact time again. I asked the girl standing next to me and her expression was so puzzled that I finally took a look at my left wrist. There it was! I'd been checking my right arm - where I usally wear my watch - and I'd had my watch the whole time, just not where I expected it to be.

Come on, laugh at me!

Also, a request for school: I need a recording of "Rule Britannia" - no matter what version, raucous football fans or whatever. If you've got one sitting around on your hard drive, could you send it to me please? Cheers.