A position used most commonly in threesomes with two women and one man. A male participant lies on his back, with the two women atop him, one on his face and one on his penis. The women will take turns sitting, simulating the movement of a seesaw.
Mary: Hey honey, what’s your freakiest fantasy?
Jamal: you know, I’ve always wanted to do a South Dakota Seesaw
Mary: Oooooooh me too. I’ll call a friend to come over!
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