Mummy has caught you wetting your pants for the last time. She cannot believe you are wetting your pants at your age. You really are going backwards aren't you?
Well Mummy has absolutely no choice about what she must do and you will have absolutely no say in the matter. Mummy makes the rules in this house and that is final.
You want to wet your pants like silly ? Then you will be treated like one.

(The dynamic in this clip is md/lb with a strong diaper discipline tone.)