There's two man talking about their kids. manA:These kids today.[ means from how I see it, you can see through a door] From the door ,man they got it all over us.[ some kids are smarter than adults now] manB:My daughter has it all over me, i can tell you that.[ his daughter is smarter than her father] I wondering what's"get it all over sb" [ can mean son of a bitch= it's a slang tem of insult]mean. And why manA mentioned a door , what is it with a door?

In electronic dictionaries, sb means "somebody."