Omg my heart was just in my mouth! Ds has a friend round from school, first he's been here, both age 5. I was sitting downstairs letting them get on with playing and I heard the boy shout 'look at me!' and I went into the hall to find him holding on to the upstairs banister but on the outside ie with a potential drop from ceiling height!!!! I crapped myself and told him firmly that wasn't allowed and very dangerous! Should I tell the mum when hs comes to collect him? Or just leave it? Eek!