Fire Hydrants

Yesterday we were taking a walk after supper.  Lissa is very tactile, touching everything. and then, despite her being 4, or perhaps because of it, her hands go to her mouth.  As we passed a fire hydrant by the side of the street she reached out to touch it. 

"Lissa honey, please don't touch the fire hydrant," I said, knowing that her hands would next be in her mouth.

"Why Ooma?"
"Well, dogs pee on fire hydrants for one thing."
(pause)
"Oh is that why they are yellow?"

ROFL