While I was fixing our Sunday Brunch, Deus Ex Machina was standing in the kitchen with me discussing his plans for the day. He said, "I need to dump the ash in that bottle and if there are crystals, I'll save them."
I said, "You didn't pee in that bottle of ash, did you?"
He just grinned - with a twinkle in his eye.
For those who don't know, woodash + urine = salt peter, which can be used to make matches ;).