Why are mummies scared of vacation?
Why this joke works
Relaxing Could Undo the Wrappings
Unwind can mean relaxing after a busy stretch or undoing something wrapped around itself. A vacation normally offers the first, but a bandage-wrapped cartoon mummy worries about the second. The setup turns a welcome break into a problem that belongs specifically to this character. Nothing else needs to go wrong on the trip: the very activity that would make a holiday restful sounds as though it could undo the traveler's familiar wrapped-up appearance.
A closer look
A Closer Look
A suitcase beside a cheerful mummy is enough to establish the scene for a Halloween card. The answer lands best as a quiet explanation rather than a frightened scream. Keep the story at the level of loose wrappings, with no description of what lies underneath. That preserves the light visual joke while leaving the vacation-versus-relaxation reversal intact.
Fact behind the joke
Fact Behind the Joke
Smithsonian material describes linen as one of the materials used in ancient Egyptian mummification and natron as a substance used for drying. Wrapping was part of a larger preservation process. The strolling, suitcase-carrying mummy belongs to playful fiction; the linen connection gives that cartoon figure's worry about unwinding a recognizable historical starting point.