What is the meaning of the album title "Flying Microtonal Banana", by King Gizzard and the Lizard Wizard?

Context: Subtitled Explorations into Microtonal Tuning, Volume 1, the album is recorded in quarter tone tuning, where an octave is divided into 24 equal-distanced quarter tones; it was originally conceived to play on a baglama, so the band members used instruments specifically modified for microtonal tuning, as well as other Middle-Eastern instruments like the zurna. The name "Flying Microtonal Banana" comes from Stu Mackenzie's custom-built yellow guitar, fitted with additional microtonal frets.

Answer: The title of the album "Flying Microtonal Banana" comes from the name of Stu Mackenzie's custom yellow guitar, fitted with microtonal frets. The guitar was built to use quarter tone tuning, in which the octave is divided into 24 equal-distanced tones.