Yesterday, after I was, in my fatherly tone, nagging Alexander and telling him not to pick his nose, he went into a logical explanation about why he was doing it.
"I have to remove the boogers," he said "Because they keep going bigger."
"They keep growing bigger?"
"Yes," he exclaimed. "If I don't remove them, they'll get bigger and bigger and hurt my nose."
"I see," I said. "So what you're doing, then, isn't picking your nose, it's really just preventative maintenance."
"Yup!" And a big grin spread on his face as he repeated the words. "Preventative maintenance!"
You've gotta love the logic of a four year old. How wonderfully creative.