Not sure if this was real life or staged, but I'm leaning towards the former...
Vegas Man Gets Choked Out By Chick
"This is on a breezeway by Cosmo and these two seemed to be playing around and then dude slams chick on the ground and chick don't play that..."
"this man was walking in vegas something started happening between him and 2 chicks. things got violent he hit one, she proceeded to choke him out until he was unconscious and then continued to choke him out while people cheered her one with things like "you go girl!" http://www.liveleak.com/view?i=343_1362720395