If you had killed John Lennon, that could be a starting point for all conversations: “That reminds me of the time that I killed John Lennon!” Or: “Since I killed John Lennon, how the world's changed.” Or even: “I swear the cost of owning a high-performance car is significantly more than when I killed John Lennon, I can tell you.”; “I'll never forget that Tuesday, it was the one just before I killed John Lennon.”; “Hand me my gun...the one next to the one that I killed John Lennon with.”