My sister-in-law, who was created by my father's remarriage, is extremely selfish! One day, my sister-in-law tells me to give her an oil massage! Her ass is shiny with oil! Her transparent tits and pussy! I naturally got a hard-on from the sheer eroticism of it all! Then, my sister-in-law says she's going to give me a massage, and I'm in big trouble! My erection was immediately exposed! But my sister-in-law was also horny from the massage, so she took my erect penis in her hand and started giving me an erotic oil massage! I couldn't hold back any longer, and my sister-in-law and I both got down to the naughty bits!