DO NOT LICK YOUR SUNGLASSES.
And, no, that was not necessary for my children. Unfortunately, it is for me.
I put my sunglasses on this morning, and they were horribly spotty. A casualty of yesterday's geiser in the backyard - a little unexpected fun for the children and panic for the parents when the sprinkler line was punctured by the garden tools.
In the car, I needed them. But I couldn't see through them. I used the only moisture I had to rub them clean. So I licked them.
They tasted bad. Very bad. A little like dirt. Honestly? A lot like dirt.
My sunglasses are clean-ish, and they left a very bad aftertaste. I don't recommend it.