nutcake
/ˈnʌtkeɪk/Definitions
1. noun
A person who is annoying or obnoxious, often in a comical or endearing way.
“She was being a bit of a nutcake, refusing to try the new restaurant’s food.”
2. adjective
Crazy or eccentric, often in a charming or humorous way.
“He’s a bit of a nutcake, but I love his quirky sense of style.”