There are two Mexicans who have been lost in the desert for weeks, and they're at death's door (which is just outside Guadalajara).
As they stumble on, hoping for salvation in the form of an oasis or something similar, they suddenly spy, through the heat haze, a tree, off in the distance.
As they get closer, they can see that the tree is draped with rasher upon rasher of bacon. There's smoked bacon, crispy bacon, life-giving juicy nearly- raw bacon, all sorts.
"Hey, Pepe" says the first bloke (Don Pedro). "ees a bacon tree!!! We're saved!!!"
"You're right, amigo!" says Pepe.
So Pepe goes on ahead and runs up to the tree salivating at the prospect of food. But as he gets to within five feet of the tree there's the sound of machine gun fire, and he is shot down in a hail of bullets.
His friend quickly drops down on the sand, and calls across to the dying Pepe. "Pepe!! Pepe!! Que pasa hombre?"
With his dying breath Pepe calls out.... "Ugh, run,amigo, run!! ees not a Bacon Tree"