Nathan: I can climb over the fence and get the ball.
Me: No. It's not safe. There's a big dog over there.
Nathan: I've done it before. The dog's not there.
Me: It's a big dog. It's not safe.
Nathan: I've done it before. It's no big deal.
He climbs over the fence and disappears.
BIG Dog: WOOF! WOOF!
Ball sails back over the fence.
Nathan sails over the fence....mostly. As he unhooks clothing caught on the fence:
Me: I guess you'll listen to your Dad more often...