Chariots of Fur

After being slingshotted into a cactus by a stubborn bow, Wile E. gets the idea to disguise himself as a cactus. As he tries to put the costume on, he can be seen wincing in pain in the process and ends up in more pain after a mistimed attempt to grab the Road Runner lead the Coyote into wrapping his arms around himself with very painful results. Wile E. then promptly decides that the costume isn't worth the trouble and kicks the box in which the item came in away.

Example of:
Cactus Cushion