Soul And Inspiration:

“Mellow Yellow,” Donovan

"Electrical banana is gonna be a sudden craze," a line from this psychedelic single, sparked a rumor that smoking dried banana peels would get you high. In fact, it referred to yellow vibrators that caught on around the time Donavan wrote the 1966 song. As for the phrase "mellow yellow," it first appeared a half-century earlier in James Joyce's "Ulysses"—in a description of Molly Bloom's buttocks.