The act of sending a feminist bitch straight to hell using a seesaw,often done by a person who has an sexual obsession with his sister.
"Korekiyo impaled the fuck out of the feminist bitch using the Seesaw Effect,and then went on to fuck his sister."
by Danganronpa gayfan February 27, 2024

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!
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!
by I Made This Account In Spite April 30, 2022

by jeff & tommy August 9, 2008

by back door enterer April 8, 2020

by Mitchell6969 May 16, 2019

Men: wear a backwards strap-on and have two people(men or woman), one in front on behind and does heavy thrusting motions in both directions
Women: wears two strap-ons one on the front the other on the back and does heavy thrusting motions in both directions.
Women: wears two strap-ons one on the front the other on the back and does heavy thrusting motions in both directions.
by joel chris johnson August 7, 2025

When you banging your girl and she sit on your schlong and you go up and she push you down and it loops.
by Your Roblox GF (your uncle) January 30, 2024
