Winchester

When a friend says that they will do something stupid, balsy, or extreme, even if its a joke, you can yell "Winchester" and they have to do what they said or else everyone in the group or squad can punch him/her.

Guy 1: "don't mess with those bulls"
Guy 2: "bet ill jump in and ride one"
Guy 3: "WINCHESTER"
Guy 2: "hell no!"
Guy 4: "then youre going to have a huge bruise on that arm because youre either riding a bull or taking the punches"