We hope so!

“Bro, where’s your belly gone?” Kary asks halfway through her snacks.

“It’s still...nope! It’s gone!”

“Where? To your big butt?”

“My *bigger* butt! Crap, wow, my hips are wide! I’m all bottom heavy now! I think...”

You walk around and gauge the width of your hips against Kary’s cock by straddling her. Kary looks on wide-eyed. The chems look like they all went to your bottom half, making you pear-shaped, but wider than Kary’s cock.

You jump in front of her and just back up into her penis. The entire head fits between your butt cheeks and knocks at your back door. You push back, lubed by her dripping pre. You pant as you bear down on your sister’s mammoth meat. You begin to open for her.