My morning conversation

Me: "Maggie! Did you pick your nose and put your boogers on the arm of the couch?"

Mag: "Uh-huh."

Me: "Don't do that ever again. That's disgusting! I don't want your booger germs all over the couch, do you understand?"

Mag: "Yes, ma'am...Luckily I didn't put them on the bottom of the couch (the seat) because that would be gross to sit on boogers."

...Excellent point. At least she thought it through.