Spaghetti Western-like showdown involving two characters verse one. Comedic. Involving funny voices to take away some of the seriousness. Could possibly start with all 3 against each other but something causes two to turn on one.
Possible story – two characters fit the western theme and are set up to do a dual when a third person comes through destroying the tension, the original two look at each other, then in unison shoot the third.