The Silent Fart
A man walks into a crowded elevator, and as the doors close, he lets out a loud fart. The whole elevator is silent for a moment, and then one person slowly says, “Was that you?” The man looks around and says, “No, it was a silent fart. You can’t hear it, but it’s still there!”
Everyone stares at him, baffled, but suddenly they all start sniffing the air. He grins and says, “Told you it was silent, but deadly!”