Vapor Lock
They stopped a passing Caravan and asked the leader to send out a Camel Mechanic when they got to the nearest village.
A few hours later the Mechanic arrived. He looked in the Camel's mouth, ears, and up its rectum. He went to his tool bag and pulled out a large rubber headed sledge hammer. He raised this high in the air and brought it down on the Camel's belly, as hard as he could.
Well, that Camel let a fart you could hear and smell as far away as 17 sand dunes. It then struggled to its feet.
"Ah ha!" the Mechanic said. "Just as I thought ... vapor locked!"



