You sneeze violently in a coffee shop, and someone behind you whispers "bless you" so faintly it might've been the espresso machine. Now you're locked in purgatory: do you turn around and say thanks, risking looking insane to someone who never blessed anything? Do you sit there pretending you didn't hear a blessing that may not have existed? I chose to nod backward without turning, committing fully to thanking a ghost.