Red hasn't messed her diaper in days and Step-Daddy is suspicious. He is certain she has been sneaking to the toilet, but also worried she might be constipated. To deal with both possibilities, he gives her a two quart enema. As a punishment if she has been sneaking or relief if she's constipated.

When the enema doesn't result in an immediate evacuation of her bowels, he knows she has been sneaking to the toilet. So, he sends her to sit on the toilet in her diaper until she fills it.