Buck

Something that is weird, odd, wild or out of the ordinary. Doesn't necessarily have to be in a bad way or a good way something can simply be decided upon as buck.

Anything meeting those criteria is decided upon as buck and the bad or good can be added from there.

When used in context with people use generic names such as Billy and Sally.

Good: I was at a concert the other day and I was absolutely buck. I got in for free, jumped on stage and hung with the artist after, it was buck.

Neutral: The shape of that building is buck. (weirdly shaped out of the norm in any aspect)

Bad: Billy was so buck today, he started screaming and throwing stuff. He was so BUCK!