He'd argue that point if he knew she'd thought about the fact it was supposed to hurt. Maybe sorta, in a way. Pain was the body's way of alerting the brain that something isn't right, after all.

"Germs are uh... really, really tiny little organisms that you can't see without something called a microscope. Good germs help fight bacteria and help prevent you from getting sick. Bad germs are the opposite-they make you sick and when you get a cut it's good idea to clean it with something to kill the germs so you don't get an infection and get sick-but since we can't do that... uh... just let me know if it gets red around the edges or if you start to feel weak or woozy. I don't want you to catch a fever, okay?"