I was crunching away on a Blow Pop and a sharp piece of candy cut the roof of my mouth.
I went in the bathroom and did the two mirror thing so I could see the the cut. The longer I looked at it, the more it bled and the more it hurt.
When I shut my mouth, it didn't hurt as much and the bleeding slowed down. It felt better and healed more quickly with my mouth closed.
I realized that the more my mouth was open, the more pain I would cause. But when I shut my mouth, it allowed healing.
And, oh my, ain't that the truth.