I just woke up and one of the things that happened in my dream was I that I was telling a joke to people, but I don’t think it’s a joke I’ve ever heard so my subconscious might have made it up.
I’ll tell you what it is, but I’ll warn you it’s a bit sick (sadly any claims that I can’t take responsibility for that are mitigated by the fact that I seemingly created it!)
A nuclear bomb goes off in a city, incinerating tens of thousands of people and the blast slowly enveloping the rest. As the wave of destruction heads out into the suburbs a woman looks out of the window and, knowing she has seconds to live, thinks: “Oh no! I can’t remember if I left the gas on!”