This is the epitome of a conversation I have with M- at least once every day, proving she's definitely my kid:
Me: Hey, are you stinky?
M- (shiftily): No.
Me: I beg to differ. (as supportively as I can muster) Okay, we have to change your diaper now. (while beginning to change her) You have to tell somebody when you have to go to the bathroom, rememb...
M- (eagerly, in a Notifying Tone): I have to go to the bathroom!
Me: Yes, I know you did, that's why I'm here changing you-- you have to tell somebody BEFORE you go in your pants, so we can help you get to the toilet. And if you go in your pants by accident, you need to tell somebody that, too, so we can help get you cleaned up, right?
M- (same tone as above): I made poop in my diaper!
Me (with one final wipe): Yes. Just like that. Thanks.
You may also enjoy the other (4 YO son) D- conversations, (2YO daughter) M- conversations, and (wife) J- conversations.