GF's Sister: "NO penetration! Just rubbing my pussy" OOPS... I CREAMPIED HER

The sister of my friend had always been off limits. Beautiful and bold she suddenly sat on my lap that evening. Only without penetration she whispered pressing her hot body against me. Im just rubbing my pussy. She pulled up her short skirt moved her panties aside and started sliding her wet pussy along my hard cock. Her slippery lips wrapped around my shaft as she moved faster moaning into my neck. Fuck its so hot she gasped rubbing her clit against my head. I couldnt hold back. She pressed too hard and my thick cock suddenly slid deep inside her. Oh shit youre inside me she moaned but instead of stopping she started riding me harder. I grabbed her firm ass and thrust deep. Her tight wet pussy squeezed me until she shook in orgasm. I filled her completely with hot cum. She went limp on me breathing heavily and whispered with a naughty smile Well you filled me with cream you idiot.