What is your definition of cheating?
So let's say... there is a guinea pig.
Not a figurative guinea pig, but a real guinea pig. A cute agouti guinea pig that is abandoned on your doorstep one day. Now, let's say your neighbor has an armadillo.
Skip ahead a few years - zombies have hijacked all the tanks from the local army base and are plowing through your neighborhood. Zombies have agreed to spare your lawn if you hand over the guinea pig as sacrificial snack food. Now, you know very well that people, undead or not (isn't that a confusing statement?), eat guinea pigs in some parts of the world, but in those years that have passed you have grown quite fond of this particular guinea pig. So you tell the zombie captain in the Panzer to wait two seconds - you have to borrow some BBQ sauce from your neighbor - you run over to neighbor's house, snatch the armadillo out of its cage, strip the armadillo of its armor, and, upon emerging from the house, present the armadillo to the zombie captain. The undead cloudiness of his eyes ensures that he will not be able to tell a naked armadillo from a guinea pig. He thanks you, and spares your lawn.
You now have the only intact lawn in the neighborhood, and your guinea pig is still alive.
Ask me to define irony now:
The guinea pig, having a life span of only a few years, dies the next day. You find out that the armadillo was pregnant and your neighbor was planning on giving you one of the babies. Armadillos make good cocktail waiters and private foot masseuses. Analysis: fail.