bully baby I'm babysitting a four year old and my son will be two soon. he doesn't know how to play!…

bully baby

I'm babysitting a four year old and my son will be two soon. he doesn't know how to play! he likes to be rough and thinks hitting and pushing is playing. I try to tell him no and to be nice but he thinks it's funny. he's not really around kids much besides at his dad's house and idk how he is around them. we also don't hit so idk where he gets it from or if it's just a phase?