Leni's Shitty Time.

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Leni's injury was life-changing, the fact that her sphincter was damaged beyond repair forced Leni to wear diapers to prevent messes from being made. In a blantant and insentitive way, Lori held a meeting with her other siblings.
"Okay guys, as we know Leni can't control when she poops anymore, so every week we'll have to give someone the responsibility. Who wants to go first?"
Everyone was uncomfortable with their new reality, and instead of helping their sister each had their own excuses. Many claimed to be too young for that responsibility, Luna claimed that her bracelet was too spiky and she was afraid of damaging her even further, after minutes of round-about excuse making Lincoln cringed knowing what must be done.
"I volunteer."
He wasn't excited, but he knew what must be done. Lori, seeming very relieved, smiled at him just thanking her lucky stars she wouldn't be stuck with that for now.
"Really responsible bro."
Over the week Lincoln would hear variations of this empty platitude. He was given the appearance of appreciation, when in reality the sisters appreciated not getting their hands dirty. Merely hours after lunch Leni knocked on Lincoln's door, he knew what must be done.
"Linky, bro, I need you for, the thing."
Leni, in great shame, looked doen at Lincoln as he sat at his computer chair. He paused his game and turned his monitor off.
"You know I'd do anything for my sisters!"
He laid her of his bed and got out the stuff he needed. Leni was humbled but tried not to make it any more awkward than it has to be.
Lincoln looked at Leni and smiled a bit. "That wasn't so ba..."
Before he finished his thought another turd shot out of her anus, right on his face. Leni, having barely felt anything, smiled back.
"That's great to know! When can I go?"
Lincoln realized he got a little in his mouth when he thought to himself how much he'll enjoy watching his less caring sisters go through this.