That's what my ex-husband asked two old ladies at the checkout counter one time when he was buying tampons for me back in the 80's.
I thought they were going to choke to death from repressed giggles.
"Hey Pam, you wanna play with my nuts?"
He asked me this once in a crowd of people while leaving a movie theatre. I was horrified until I looked down to see that he had 3 walnuts in his hand. I couldn't help but burst out laughing even though I knew that everyone around me had heard the question but they could not see the nuts.