Who me? I didn't touch him

I have had several reports lately from Jackson's, yes I said Jackson's, teacher saying he is pushing, hitting and taking the occasional nibble of his class mates. Nothing major yet but he is the oldest in his class now at 18 months and he is also the biggest. Since he gets in trouble for pushing the other kids he has decided to go another route. He sticks out his belly as far as possible and runs into the other kids. He didn't push the other kid, right? I'm sure it was an accident.Look at that sweet face. Would he do something like that?