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You can see the fat bulge of your cock deforming your sister’s throat, and by the looks of the profuse amounts of precum she’s barfing up constantly you recognize that she’s basically a living Onahole. Cackling madly at how you’ve changed your sibling, you thrust deeper than ever and force the tip of your engorged cock to pop out her lips on the far side.

Your sister grunts helplessly as your cock bends her mouth wide open. She can feel every inch, every vein of your fat penis throbbing inside her tender young body. Her legs and arms flounder desperately, but at this size it’s impossible for her to resist you using her.