When your personality and or behavior is so gullible or oblivious that someone can make up an adjective like fiddly and you'll believe it actually exists.
Derived from the word fiddle because whoever came up with that was clearly too oblivious to realize the word violin already existed.
Person 1: Who's Brittney Spears?
Person 2: The cavewoman married to the caveman in the Geico commercials.
Person 1: Really? I thought she wrote music?
Person 2:.......You're fiddly oblivious
Person 1: Yeah.... Wait that means imaginative right?
Person 2: *facepalm* Look it up in the dictionary Person 1: It's not there....
English idiom and phrase used to describe the act of "playing guitar" and usually with somewhat high profeiency.
Comprised of two individual roots, both "Fiddly" which means small and meticulas task, and "diddly" meaning you got it for cheap or, it's a task to waste the time of the user.
Also Fiddlydiddly.com has been chosen as the website name for one: "Fiddlydiddly hand crafted instruments and cabinets" in Florida USA.
Ned Flanders (The Simpsons) also used similar terms to the alliteration fiddlydiddly, usually while spyong through a window.
Example- "dude I'm going home to rip a bong and shred some Fiddlydiddly"
Example- "woah bro! That girl plays a mean Fiddlydiddly!"