This is when a girl is getting fucked up the ass so hard that both her and the person fucking her knees buckle from the forces of fucking and getting fucked. Best observed in any porno where anal poundings are involved.

Dude me and my girl were fucking, it was Knee Buckling Butt Fucking night, she was so tired after that she fell asleep with my cock in her ass, what a night!

Knee Buckling Ass Fucking is the way to go

Knee Buckling Butt Fucking by Overloard October 15, 2010

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Bucklington

A 5'4" Manlet who streams on twitch. A master at scamming his fans and bullying his friends, such as thinlyslicedham. Famously know for not streaming for extended periods of time and being buck from criken

Bucklington scammed me recently, took my prime sub and left for a month.

Bucklington by Jim jong un February 2, 2022

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Buckling Branco

While having sexual intercourse from the backside, the male whispers in the girls ear "I have AIDS", when you really don't.

"After doing it to Alex last night, James found out he really does have AID's"
"After Buckling Branco Martha agreed and told George she has AID's too"

Buckling Branco by Drog Mon July 23, 2006

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Becking call

Not to be confused with “beck and call”, this is much better.

Yeah Tiana-Rae has always been at my becking call since she fucked up my life embarrassing me all the time.

Becking call by cock 7 April 1, 2021

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