When I stick my finger in my belly button, I feel a nerve in the center of my body shoot up my spine. If 100 belly buttons were lined up against a wall, I could definitely pick out which one is mine."[82][83] Displaying her bare navel during performances became her trademark.[84] American actor Sal Mineo had a fetish for navels. His partner Courtney Burr had once commented in an interview that he came to know about Sal Mineo's navel fetish.[85] In the book Sal Mineo: A Biography, author Michael Gregg Michaud wrote, "Sal had an insatiable sex appetite.