Not really a massive issue/AIBU - I just found this attitude from nursery amusing!
Picked DS (3y) up from nursery on Thursday and asked how he had been. Pre-school leader said he'd been fine, but 'a bit of a monkey, he's been quite cheeky', think he'd been answering back bit and not really co-opeating with the activity. He's like this at home and he does get told off/punished for it (toys taken off until behaving better, naughty step sometimes depending how bad he's being etc). So I apologised and reprimanded DS lightly (other kids around so didn't want to show him up too much) and said I'd have a word at home (which I've done on the other couple of occasions he's behaved like this).
Leader laughs and says 'it's fine, really - he's a boy after all! It's to be expected!'.
I just laughed whilst internally disagreeing that DS should get away with being cheeky and disruptive just because he's a boy. It's amazing that people still think like this!