Damn you, Civilisation 5

I thought I would check out a little bit of Civilisation 5 this afternoon, again the Sid Meier's curse took hold and I spent far too long on it. It gets ridiculously addictive when your units are levelling up and you consider going to war with a neighbouring nation. Otherwise, today was pretty standard, we did have an unplanned fire drill during my English lesson. Beforehand we were having a class discussion and just as it was coming up to our go the bell went off, of course the teacher just said 'Why now?! We were on a roll!'