A British platoon is stranded in the Western Desert during W.W.2.
Running out of food, they draw lots and send one of their number off into the wilderness to see if he can find any
After a day he returns saying, "I've got good news and I've got bad news"
"What's the bad ?" he is asked
"There's only camel shit to eat"
"What's the good?"
"There's plenty of it"

Similarly
Two Tommies drinking in a Cairo bar find they have missed the transport back to base so they hire a camel
They clamber on its back and give it a flick with a stick - it refuses to move
After several tries and failures they clamber down and seek out the owner for advice -
They re handed two blocks of wood and instructed, "Walk around to the back of the creature and you will find his balls sticking out behind him; take the blocks and clap them together on his balls"
One of the lads winces and says, "Won't that hurt?"
"Only if you trap your fingers" he is told
Jim