If the definition of courage is doing something that terrifies you, then I'm much braver than I ever thought - over something most people take for granted, so it doesn't count. Good news, I have a very pretty colon, as colons go, and I will not ruin your day by telling the ugly details of preparation. As a funny consequence, seeing the periodontist next week looks easy by comparison.
So the moral of these appointments? Eat your fiber and floss your teeth.