Is it common for little kids to behave pedophilic?

My girlfriends nephew is about 4..

The very first day I met him, he was in timeout
Me and my girlfriend were kissing, he’s turned around watching us.
I didn’t think much of it, just a little kid..

Then at dinner he was told to keep his hands on the table because he kept rubbing this other little girls behind..

Then yesterday he got in trouble for slapping the girls behind & walking around with his privates out, trying to show off..

is this common behavior?
I know it’s not normal but is it common
It’s common
He needs help
Results
Select gender and age to cast your vote:
Is it common for little kids to behave pedophilic?
Post Opinion