Physics revision, eh? Nudge, nudge.

I was working today, but took a call from DD2 to gloat about how much they were enjoying their bike ride with DH. They were scoffing ice creams in the sunshine at the time. Predictably, when I arrived home DH was snoring loudly on the sofa (poor lamb; childcare is so taxing).
DD1 has two mates over, and they are off to Thorpe Park tomorrow. I'm a little nervous because it is her two least sensible / most irresponsible mates, so the "riot act" will be read before we drop them off. What's the worst that could happen? (don't answer that).
I am agog at tales of hardworking teens. I dream of being able to claim the same about DS. He is starting Y10 in September and does less work than his baby sister.