some people still say buck naked, but most say butt naked because the yanks made a cooler version of the term.
John Henry Smith III: "You stupid American, it's "buck naked"! Bloody twit!
Johnny: "Haha, Yeah, but we are more popular, and our term is better, so we win by default. Either way, I still saw your girlfriend naked."
2. Something that is associated with above average qualities and good times.
3. To not be wearing underwear.
2. The 5 keg party down the street is going to be buttnaked!
3. Did you see Jenny last night? She got buttnaked at the party after we won the game.