kooky

Eccentric, strange, or foolish; crazy or insane; kookish.

His kooky behavior seemed charming at first, but soon got on our nerves.

In a move to make his exam more interesting, sociology instructor Abraham Kovler borrowed the Atco disk from deejay "Big Jim Pappas," WALL, Middletown, N.Y., and based eight questions on the record's lyrics. […] Pappas played up the project big on his show and nominated it for a "Kooky Exam of the Year" award.

Behaving like a kook (a person with poor style or skill); kook-like.

From Kook to Classic A new appreciation for the grace (and glory) of longboardsmanship changed the image of longboarding from kooky to classic. Longboarding became a class-act and the classic essence of the surfing lifestyle.

I realized that the strain of the aloha spirit that surfing was bringing out in me was extremely aggressive. […] In my third week I had a revelation. I returned to Seal Beach, where Kim was still in school with the Michaels, and paddled straight out to the pier. I looked around and realized that the lineup was all kooks. In fact, I was the least kooky. I couldn't believe it. Where was the gang?

Alternative form of kookie (“kookaburra”).