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The sight of a girl's anus involuntary twitching at the moment of orgasm which is confirmation that she has genuinely achieved sexual satisfaction and is not faking. Only visible from certain positions during intercourse notably reverse cowgirl and doggy or when watching a girl masturbate in a prime position with legs apart.
Heard a lot of noise from your room last night.
Not surprised, Caroline was up for a deep reverse cowgirl and it was a winking success. Want to see the clip? Got a boner just thinking about it. I never knew when you were faking it when we were together.
by Fiona BR May 03, 2017
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