My son is in reception and one of their newish teachers is a young male nursery worker. He has singled out a few of the boys, including mine, as his favourites, calls them 'my [name]' and 'my favourite boys'/ my gang - tickles their necks. It all feels a bit intrusive. All the other staff, male and female, have quite clear (possibly too much so) boundaries and don't seem to get close to the kids at all. It just seems slightly off - maybe more appropriate in nursery but even there I think it would be a bit odd. Not just because he's a man. Would you say something to a manager - not to try and cause a storm, but maybe just to alert him about appropriate boundaries? Or am I being silly?