Yeah but then why can't they wipe up after themselves? They obviously know when the flow is haywire and they've missed the bowl. My DH is certainly old enough to do so, and so is my DS. Why does it have to be left for me to deal with when it's dried up and making the grout smelly? GRRRR.
They may not be able to help the drips but they are capable of behaving like civilized house-broken humans.
My sons will both clean up pee after themselves. My friend's son and husband also wipe up after themselves.