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OldFirm08
Guest
yeah I watched the video about a quarter of the way through,,,seems her abdominal muscles moved with his plunges, but his angle of dangle was not directed towards that motion. Must be just a muscular reaction. I would think if you had a very pronounced downward or upward curve to a big penis, it could possible cause the desired effect IF the girl is in a position where your thrust would curve/poke toward her abdomen. Not sure if that was what the video showed us.