1. Winchester
Meaning kick some ass. It originates from the television show Supernatural(airs Thursdays @ 9:00pm on The New CW) were two brothers Sam and Dean Winchester hunt the paranormal, hence; the kicking ass part.
Billy: Hey Rog, Jim's all over your girl your not going to do anything about it?
Roger: Yeah Jim better cool it or i'll go Winchester on his ass!
2. winchester
A town where it is said that all the familes are related. They all are incested, bred from incest
Boy: Heyy
Girl: Hi
Boy: Want to come back to my place?
Girl: Suree, where is it?
Boy: Um, winchester.
Girl: Oh um, I have to heat up a week old bowl of soup. Sorry!
3. Winchester
Bending a chick over any form of furniture, in a manner that she is bent over at the waist. Doing this manuver she resembles an older style side by side shot gun that hinged in the middle.
I hiked up her skirt, planted my hand between her shoulderblades bent her over the back of the couch and went did her dirty Winchester style