What's the best way to kill an amputee? With a handgun.
Why would you say something so mean about amputees?
They deserve to die
Making jokes about amputees dying is completely immoral and makes you look mentally unstable.  Try to control what you say to people, even if you think it's just a joke because it's very insensitive to talk bad about amputees who don't have the same advantages in life you have.