Unintentionally penetrated and filled with cum by my stepsister instead of my usual sex toy

A steamy encounter with my stepsister turned into a wild, unscripted romp. I was on my way to my favorite sexdoll when my stepsister interrupted. Ignoring her advances, she climbed onto me, leading to an intense, raw session. Her moans filled the room as I ravished her in various positions, culminating in multiple vaginal creampies.