Somewhere on the net I saw this joke.
- What's the hardest part of a vegetable to eat?
- The wheelchair.
I don't get it. I googled a bit but I suspect it might be a play on the words, possibly not that clever one, neither.
The joke is based on this definition:
3 : a person whose mental and physical functioning is severely impaired and especially one who requires supportive measures (as mechanical ventilation) to survive
When the setup question is delivered, we think of "vegetable" as a plant, since that is the more common meaning. The punchline reveals that the intended meaning was "a disabled person".