Exhausted

As you laugh at what’s happening your brother runs to his car. He finds himself pooping his diaper while in there. You go back home and wait for him. When he gets back home you find him trudging through the house with a giant messy diaper sagging between his legs angry at me. He demands that you change him, but you told him that you through all the trouble of making you immune to rashes and so nobody could smell his filth for a reason. He says he doesn’t care he wants you to remove so...

1.) You use magic and put the waste back inside of him and have it keeping going in after a few good minutes, he keeps voiding his diaper now, you hope this will teach him not to defy you.

2.) Ugh I guess I change you diaper(and put it in his new diaper pail, that can’t see only smell.)

3.) You make so that he can only poop and pee through orgasm now to stop his whining.

4.) Another invention