Children of the Corn II: The Final Sacrifice

Corrected entry: In the scene where the man bleeds to death in the church, how does he know that the blood coming from his nose is from the left nostril when he rubs both nostrils?

Correction: Obviously you've never had a nosebleed before, because when you have one you can feel it, either from the sensitivity of the skin or the nose hairs. Or he might be like me and always bleed out the same nostril.