I've been playing with different title ideas for one WIP. One is a riff on Catherine, Called Birdy, a children's historical novel (mine's decidedly adult). A character alternately goes by Alice and Wendy, hence "Alice, Called Wendy". But I've also considered a phrase from the WIP, which conveys a character motivation: "A Cure for Mortality." But then I've also considered another phrase spoken by a character: "The Modern Modern Prometheus." I like the ring of it, and it has thematic resonance. But I'm afraid people will think the double "modern" is an error, and/or they won't be familiar with the allusion to "The Modern Prometheus". In other words, out of the context of the dialogue, it might not really work.