I loved Junior's pun today after Gordon read the story about the guy who had to go to the emergency room because he had a combination padlock on his johnson. Junior said that he had run into trouble because "he had forgotten the penal (penile) code." George and Gordon moaned and groaned, but this was surely a tribute to its excellence.
It was indeed choice. The dedicated punster, which Junior may well be, will note homonymic associations in phrases and will store them up, hoping for a chance to convert them to puns. Speaking only for myself, I have saved up some howlers for years until the right moment came along.
This one was a jewel. The pun is near-perfect because "penal" and "penile" are so close in pronunciation, and the application to the combination padlock is not at all tortured. Bravo.