In America, we’ve all been shot so many times, that most of us have built up an immunity to bullet wounds. It’s now hereditary, actually, because only people who can survive being shot live long enough to reproduce. Natural selection and all that. Some Americans have built up an immunity so high that they can easily walk way from a direct hit from a cannon ball. These individuals are considered “real, red blooded, Americans” and receive a certificate of authentication.
This is also where the phrase “come and take it” comes from. A group of Americans endured a volley of cannon fire and they managed to catch 95% of the balls shot. They then hoisted the cannon balls into the air and taunted the invading army by encouraging them to come retrieve their ammunition and try again.