Mommy isn't feeling well

Nash - What's wrong mommy?
Me - I have a headache.
Nash - Well then take something for it.
Me - I did.  It's not working.
Nash - Well DUH, that's because you did it wrong!
Me - Is that so?
Nash - Yes.  Yes it is.  Because your HEAD hurts but you swallowed the medicine into you BELLY.  If you want to fix you head you have to put the medicine right into it.

It's hard to argue with that kind of logic.