“Ah, no can do that. I have already made up my mind what to do with you, Aidan.” Mark grinned still. “But after seeing that tiny cock of yours I think your underwear should be a better protection, not that you start leaking like the baby you have the cock from. Maybe your underwear should be a thick diaper instead.”
Mark fell to the ground, rolling in his laughing fit for seeing Aidans face after his suggestion. And it got even better when the small underwear off Aidan started growing thicker, going form cotton underwear to a big diaper. Aidan looked down in pure horror. He still couldn´t move on his own, else he would have ripped that diaper off in an instant.
After Mark finally had laughed enough he added: “So, now that you are well protected I think your bladder and bowels should match your cock size. Oh, and you will lose any control over both.” Then he again started laughing.
Aidans horror grow further when he suddenly released on both ends, filling the diaper rather quickly. After finally having emptied both his bladder and his bowels he looked at Mark, still horrified and embarrassed before asking: “Okay, you had your fun, please Mark, change that back.”