Two guys are lost in the desert. They are about to just lie down and wait for death, when all of a sudden one of them (Mark) says, "Hey Dave, do you smell what I smell. It's bacon, I think."
"Yeah Mark, it sure smells like bacon."
With renewed hope they struggle up the next sand dune, and there, in the distance, is a tree loaded with bacon. There is fried bacon, double smoked bacon, Canadian bacon; every imaginable kind of cured pork.
"Dave, Dave, we are saved. It's a bacon tree."
"Mark, maybe it's a mirage? We are in the desert don't forget."
"Dave, since when did you ever hear of a mirage that smells like bacon? It's no mirage, it's a bacon tree."
And with that, Mark staggers towards the tree. He gets to within five feet, with Dave crawling close behind, when suddenly a machine gun opens up, and Mark drops like a wet sock. Mortally wounded, he warns Dave with his dying breath, "Dave, go back man, you were right, it's not a bacon tree!"
"Mark, Mark my friend, what is it?"
"Dave it's not a bacon tree; it's, it's, it's, a ham bush!"