Clown Room
Riddle: A clown is on the floor in a locked-up room where there is no window no door no secret way in or out. The clown is dead... there is a bullet hole in the clown's body and the blood has gone everywhere. But there is no gun anywhere and you know the clown was not dead when they went in the room. Who killed the clown?
Answer: The clown is actually not a clown but a gun swallower which is like a sword swallower but with a gun, not a sword. The clown had gone in the room when they had swallowed the gun but then the clown needed to burp and the burp made the gun go off inside the clown which killed the clown. Nobody killed the clown (unless the burp is someone) and the gun was inside the clown all along!
Source: https://www.riddles.com/10455
