Life or Limb Decision/Playing With

Basic Trope: A character is faced with a Sadistic Choice: sacrifice one of their limbs or die.
 * Straight: Bob’s leg gets trapped under a large boulder, and he has to cut it off to escape.
 * Exaggerated: Bob has to cut off three separate limbs, all of which are trapped.
 * Downplayed: Bob has to cut off some of his fingers to escape.
 * Bob has six different limbs. He can miss one.
 * Bob can regenerate his limbs.
 * Inverted: Bob's leg has somehow been cut off, and he has to reattach it to escape.
 * Parodied: Bob's leg gets trapped under a large boulder. Despite help already being on the way, he cuts if off anyway because he doesn’t want to miss the latest episode of his favourite TV show.
 * Subverted: Bob's leg is trapped under a large boulder, but despite the intense pain, he manages to break free after some effort without sacrificing his limb.
 * Double Subverted: The limb has sustained enough trauma that he later needs to have it amputated anyway.
 * Deconstructed: Bob cuts off his limb to escape, but he bleeds to death not much later.
 * Reconstructed: This is still preferable to slowly dying from hunger, his only other alternative. At least he had a shot at making it out this way.
 * Zig Zagged: Bob cuts off his trapped arm, regenerates it, is trapped again, has to cut it again, repeat ad nauseum.
 * Averted: Bob doesn't get his leg trapped.
 * Enforced: The writer needs to portray Bob as a character who would be willing to do anything to survive, including sacrificing parts of his own body.
 * Lampshaded: "If I manage to get my leg trapped and with nobody to help me, I'd probably have to cut if off."
 * Invoked: See parodied above.
 * Defied: Faced with having his leg trapped under the boulder, Bob decides to wait for help for as long as he possibly can.
 * Discussed: "And then I was faced with a terrible choice: cut my own leg off or die."
 * Conversed: "I just saw this movie where the guy gets his leg trapped under a rock, so eventually he cuts it off to escape."
 * Played for Laughs: Bob cuts off his leg to escape... too bad he cut off the wrong leg.
 * Played for Drama: The work goes into the physical and mental consequences of Bob sacrificing his leg to survive.