how's your hammer hanging

phrase2

1. •
   (US, informal) How are you? (generally used between male speakers)

   • “Hello, Pop,” a young clammer said to the man in an adjoining boat, a sullen old man in wet overalls, “how’s your hammer hanging?” — 1943
2. •
   (US, informal) How’s your sex life?

   • “Hey, Sam, you gettin’ much?” ¶ “Huh?” I said. […] ¶ “I said, ‘How’s your hammer hanging?’” ¶ “It’s hanging,” I said, pulling myself back to the present. “That’s the trouble.” — 1976