Even Cowgirls Get the Blues (1976) Tom Robbins
Sissy Hankshaw is a woman born with a mutation of enormously large thumbs, though she considers it a gift. Sissy makes the most of her thumbs by becoming a hitchhiker and she travels to New York. She becomes a model for the Countess, a male homosexual tycoon of feminine hygiene products. He introduces her to a staid Mohawk named Julian Gitche; whom she later marries. In her later travels she encounters, among many others, a sexually open cowgirl named Bonanza Jellybean and an itinerant escapee from a Japanese internment camp happily mislabeled the Chink.