That Tiny, Terrifying Voice

Hey, all you future fathers out there, remember this.  When your 2 year old is in the other room, and he's just recently showed an interest in potty training, and you decide to honor his request to be by himself while he sits on the potty, and though you've told him to let you know when he's done...there's nothing more terrifying than hearing, in a tiny voice, the words, "it's messy", coming from the other room.