It's when an Uncle does a backflip into his Brother's daughter face with his dick out yelling hell yeah while holding a beer.
by TheHandsomeSexAct May 20, 2018

Jerry: Hey Kim. Do you know where grandpa is?
Kim: Yeah. He's in his room upstairs, watching Noo Noo and The Backflips
Kim: Yeah. He's in his room upstairs, watching Noo Noo and The Backflips
by Jerry Archenemies August 10, 2022

First you insert both arms to at least your elbow into their butthole and then proceed to do a double backflip and landing with her sitting on your dick. This move is extremely difficult but effective
Michael put sticky Nikki into the double backflip butthole submission. After he performed this move he nutted harder then any other person ever has.
by Slicklytherickly October 18, 2018

When you and your girl are having sex, she does a backflip eagle split right on to your face and eats her out.
by Dev the patel May 27, 2018

Tom - "That chick is god awful ugly bro!"
Jake - "Yeah, she's got like...backflip upside down syndrome!"
Jake - "Yeah, she's got like...backflip upside down syndrome!"
by dczech October 18, 2008

by BANANA_47 April 25, 2022

Most commonly found in Parkour porn. When one partner backflips and lands with their penis inside of the others butt, mouth, or vagina.
My friend got caught watching Parkour Porn by his dad and they both watched the backflip insertion portion.
by FrenchRolls November 6, 2017
