Kafka attended a nudist spa; Joyce got turned on by soiled ladies' underwear; Yeats had monkey glands implanted in his scrotum to recharge his virility.
There must have been one hell of a conversation in the doctor's office before that particular procedure.
Yeats: "Well, doc, I'm having some, uh, peformance issues, if you know what I mean."
Doctor: "Hmm. Have you tried oysters? Vitamins?"
Yeats: "Yeah. No dice."
Doctor: "Well, then. I don't know. We could try... How about, uh... monkey glands?"
Yeats: "Ooh, that could work."