Zany (adjective)

1. Comically or clownishly odd; eccentric or whimsical.
2. Ludicrously or extravagantly odd.

Origin:

From the italian word "zanni" which is a type of commedia dell"arte character.

Examples:

1. The comedian's zany antics had the audience in stitches.
2. He was known for his zany fashion sense, often wearing mismatched socks.
3. The theme park's new ride was a zany mix of roller coaster and water slide.
4. The zany plot of the movie had us guessing until the very end.
5. The zany scientist's inventions were often too impractical to be useful.