Loopy (adjective)

1. Mentally or emotionally disturbed; not of sound mind.
2. Slightly crazy or eccentric; not completely rational or logical.

Origin:

Informal word, origin is uncertain.

Examples:

1. He was acting kind of loopy after the accident.
2. She was feeling loopy from the medication.
3. The movie was so bad it made me feel loopy.
4. He was a loopy inventor who made strange contraptions.
5. She had a loopy sense of humor and could make anyone laugh.