What does a sports fixture have that an amputee doesn't? two legs.
Not really sure of what you mean by this joke?
I mean that it's funny to see amputees because they don't have a leg. They look less than half a person.
Saying that you think it is funny that an amputee has no legs is really a rotten thing to say. Imagine not having any legs and getting made fun of for it by other people. Why add on stressors to someone's life who already most likely has enough stress.