In this cathartic exposure fantasy, I see that YOU, my lil step-brother, is STILL wearing diapers... even though you're WAYYYY too old for that. I sit on the bed and call you over and I observe I've heard some crinkling and some padding from the diapers around your hips even through your thickest pants... I look at you scrutinizingly as I speak, describing the sound of the crinkling... After I explain that I know your secret, I decide to have some fun with it. I'm playful, but just a little bit mean, taunting you with my new knowledge. After all, I'm just glad you're wearing these diapers so you don't make a mess everywhere!