My Step-Sister Makes Me Give Her The Gift of My Big Dick

My stepsister Sofia constantly nags about how I'm not cooperative, I never contribute to the household, and I'm totally self-centered. She's furious that I skipped giving out holiday presents this season, so she storms into my bedroom demanding her own special treat. Sofia is crystal clear on her desire this time—my massive dick.
I go all out to satisfy her craving and deliver the reward she truly earns: a hot, gooey internal cumshot right after I pound her senseless.