A childhood belief about giving birth

I was about 8 months pregnant with my second child and was holding my 4-year-old son in my lap (what was left of it). He placed his hand on my huge tummy to feel the baby kick and he said, "When you come home from the hospital, will you be wearing a cast on your leg?" I was startled and said, "Honey, why would you ask me that?" He said, "Well, when they chop off your leg to squeeze the baby out, how will they get the leg back on?" Time for our "first talk"... at four year's old!!!