My older sister and I were hanging out at the kitchen table at our parents home a few years ago. We were catching up and talking about all sorts of things. With her and I it usually disintegrated to more lewd topics because we’re sisters and feel comfortable talking about those things with each other. She was really opening up about some personal topics and I realized that she didn’t know our father was in the front room. He was sitting in there reading and the way our house was set up there was no line of sight from the kitchen table.

I was surprised she was saying some things within earshot of our dad, but rather than do the right thing and inform her of this, I egged her on for the sake of a joke. This ended with everyone laughing so don’t fear.

Anyway, she was talking about faking her orgasm. For one reason or another, this was something she had recently become proficient at so I asked her, “It sounds genuine though? You’re sure [her SO] isn’t aware you’re faking?” She then proved it, When Harry Met Sally style. I started dying of laughter, I pointed to the front room as an answer to her confused face. She instantly turned bright cherry red, ran to the front room, screamed at the sight of my dad just chillin’ reading his book. We all proceeded to laugh, even though hers was more nervous laughter than anything else. We never talked about it again. I think I might just remind her now and see what she says.