I tried this one this morning but all my younger colleagues never bother using their brains and go straight to Google instead. Believe me, it'll be better if you try and think it through.
Two men in a desert. They're both wearing backpacks. One of the men is dead. The man who is alive has his pack open. The dead man's pack is closed. What is in their packs?
Two men in a desert. They're both wearing backpacks. One of the men is dead. The man who is alive has his pack open. The dead man's pack is closed. What is in their packs?