My wife and her brother went out for errands. When my sister in law came out of the shower I was waiting for her with a nice hardon pointed right at her as she walked into the bedroom. I walked over to her and unwrapped her towel. I'd played with her tits before a few times, and fingered her once. She is 36C with a dark hairy trimmed bush. I placed her hand on my cock and started kissing her and lightly rubbing her clit. She was soaking wet by the time I fucked her and we both came loudly. The others still have no idea what we did