What's the difference between the grocery store and the hospital? Somebody actually wants the vegetables at the grocery store.
What are you trying to say with this joke about a hospital and a grocery store? I'm not sure I fully understand.
It's just a joke. The vegetables at the hospital are alive but paralyzed and dumb so nobody wants them, but the vegetables at the grocery store are delicious food. It was a stupid joke.
Just because it was a joke doesn't mean it doesn't cause harm to people who are in comas and the families of them. People who are in comas and their families are going through an extremely difficult time and making light of it diminishes their struggle. If you went to a hospital and visited with people in a coma, I think you might be more sympathetic to them.