One thing you can do is cook a single chicken leg or rib bone in a pan untill it is well done, the let them try to pull the meat off of the bone with a fork - won't happen. Then hand them a smoked rib bone or chicken leg and point out that one the ring is in the outer layer of meat which is the layer that cooks first, and two it is so well cooked all the way to the bone that you can just slide the meat right off of the bone with a fork.
If they still don't believe you hand them a block of tofu, pat them on the back, and say... "it's OK... more for me"
If they still don't believe you hand them a block of tofu, pat them on the back, and say... "it's OK... more for me"