What is Fumbledumble?
1.
An embarrassing mistake made while playing the viola. More often than not, Fumbledumbles occur while playing the easiest part of the entire composition.
Teacher: "Wait, wait, stop!! Did you honestly just play an F sharp?!?"
Student: "Yes..."
Teacher: "But it's a C Major scale!!"
Together: "Oops!! Fumbledumble!!"
See