For awhile after you quit Keats all other poetry seems to be only whistling or humming.
F. Scott FitzgeraldThe whistle is always waiting to be blown, and in some ways, it gets me to do better work.
Anne LamottWow Kelsey!" Kishan whistled. "I'm going to have to beat the other guys of with a stick!
Tiger's CurseI know of witches who whistle at different pitches, calling things that don't have names.
White is for Witching