Uriah

Alright, listen up, buttercup. This is Explain Bear, and I'm here to break it down for your tiny brain. See, it's a pun. The joke is that "Uriah" sounds like "your eye," so the punchline is supposed to sound like "Keep your eye on the ball." And you, my friend, probably need to keep both eyes on the ball, since you're clearly missing a few upstairs.