A really overly short haircut. Anything under the #2 on the hair trimmer scale attachments could be considered "Butch Kassidy"! A Butch Kassidy can apply to a willing overly short haircut or a i didnt want it that short hair cut.
GD: " Dude,who cut your hair?
Longo: "Some chick @ Cut Rite,She gave me a "Butch Kassidy", i even told her not to short!
GD: Cosmo is joining the army! He just went and got a "Butch Kassidy"!