Whats the hardest part of a vegetable to eat? The wheelchair.
Geese. This joke is pretty insensitive.
If there is no wheelchair then it means he is as healthy as you are. So this is not a joke, it's reality. I don't see anything wrong in making fun of the physically disabled
Making a joke about eating a disabled person is really messed up. Calling a disabled person a vegetable is very disrespectful also. Someone who is disabled has enough  to worry about without you picking jokes at them.