THIS is the shocking moment a woman KO's a bouncer after wrongly thinking he's grabbed her bum.

Club CCTV catches the moment Kierah LaGrave, 22, has her behind pinched by a female pal - but she assumes it is the security man and gets him in a choke hold.

LaGrave yanks his neck back and slams him to the ground during the incident in Five1Eight nightclub in Plattsburgh, New York on October 20.

The 8 1/2 stone reveller manages to choke him unconscious.

Nightclub punters run to help as he wakes up dazed on the dancefloor.

LaGrave was arrested and is facing charges of second-degree strangulation.

Other footage from inside the club, where LaGrave also works, shows her talking with a friend near the bar before she turns around to dance.

The woman is clearly seen playfully slapping LaGrave’s rear end.

But LaGrave immediately turns around to the bouncer who was in the wrong place at the wrong time.

The Plattsburgh resident, later admitted to police that she choked the bouncer.

She told investigators she did so because he had grabbed her, but surveillance footage proved otherwise.

LaGrave has been released and is expected back in court on November 20.