A guy I used to know broke his ankle, forget how. But when he was in the ER, after he had some kind of numbing agent, or painkillers injected into his ankle and foot. He was playing with big toe since h couldn't feel it. He was bending it back and forth, he bent it too far and felt and heard the snap when he broke his toe. When the nurse/doctor(?) came to check on him he told them what happened, and demonstrated on the next toe, and broke that one since it was smaller and didn't need to bend as far when it broke.