at stairgate idea Jas, if he can get out of cot, he'll do the stair gate as well, I think my tried and tested method of yelling get back in bed, should do the trick, or the if you feet touch the floor, you'll loose your favourite toy, does the trick too at the window though.
Ok, so you want a laugh then, today there I am at swimming with dd2, feeling toned after hula and pilates last night (MRM it does work I'm starting to shape up with it, so can agree with Dame) I was just finishing getting changed, when another mum wonders in and says, oooh I hear congratulations are in order, when are you due and there was I thinking I wasn't looking that lumpy She looked suitably embarrased and said another mum had told her I was and she must be confused I think it was my sticking out belly personally the top half is toning, but the bottom bit is still being worked on!