Nope, close, but unlike Groucho, no cigar! :D
Animal Crackers.
Duck Soup is famous for ....
Rufus T. Firefly: Oh, uh, I suppose you would think me a sentimental old fluff, but, uh, would you mind giving me lock of your hair?
Mrs. Teasdale: A lock of my hair? (charmed) Wh-why, I had no idea...