He wants to make Mom fatter

You slow down and walk next to your brother, raising an eyebrow. "What's up?"

"Mom liked the icing stuff, right?" He reaches into his pocket and pulls out an empty container of pre-made cake icing, then shoves it back in before your mother can see.

"Yeah, I guess so."

"And she thinks cum can taste like that?"

"Yeah, why?"

"Because I wanna feed her more," your brother says matter-of-factly. "Lots more, until she's bigger."

That raises your OTHER eyebrow. "Uh... You want her to be--"

"Thick. Curvy. Maybe even fat." He shrugs. "Don't look so surprised... I've seen your search history. I know you're down with the thickness."

"Okay, yeah, but you're talking about changing Mom's whole diet, without her or Dad noticing--" You stop short. "Oh, shit."

"Yep," your brother continues. "We've already done that once. This should be pretty easy."

"Are we actually going to...?" You glance over at Mom's jiggling ass. It's big, but it could be a whole lot bigger. "...Fuck it. How much did that sugary junk cost?"

"Not much, especially if we buy it in bulk." Cassidy gives you a sly grin. "Could order a whole crate online, stick it in that far corner of the basement. Dad never goes down there, and neither does Mom now that she's afraid of getting lost."

"Fuck it," you repeat. "Operation 'feed Mom gallons of icing while pretending it's cum' is a go. Let's see how far we can take this shit."