"Stupid, stupid, stupid." That's what I've been saying to myself for the last 18 hours or so.

How stupid am I, when:

- I know the sun burns my skin.

- I know that sunburns hurt.

- I know that I am particularly susceptible to sunburn, more than most folks.

- I know it doesn't matter if there is a cool breeze, the sun will burn anyway.

- I know that sunscreen is the best protection against this.

- I religiously wear sunscreen when going outdoors.

- I even scold others for not wearing sunscreen.

- I recently joked with friends and family about this cartoon strip, because it accurately depicted my attitude toward the sun.

- I had a good friend describe to me her recent run-in with a very bad sunburn.

- I purposefully brought the bottle of sunscreen to Lake Tahoe on Sunday.

- I made sure to bring the bottle of sunscreen onto the beach with me.

- While there on the beach, I actually thought to myself, more than once, I should get the bottle out and apply some.

- I did not do so.

?

Ow ow ow ow ow ow. Mostly, the problem is my knees and calves. Makes sleeping difficult. And walking. And holding still. And standing. And sitting. Ow ow ow ow.

Stupid, stupid, stupid, stupid. Ow. Stupid.