Chapter 20 describes how he walked around naked and barefoot (because it would just be weird if he walked around naked with shoes on) for three years. Here's the guy that we're trusting for our prophecy about everything from the birth of Christ to the end of the world, and he's walking around naked for three years. Granted, God used his nakedness as a picture of what would happen to the Egyptians, but still...
So, here's what I gather from that:
1. People must have thought he was a fruit loop.
2. He was willing to look like a fool in his obedience to God.
Sometimes I find it hard to make myself willing to look even a little silly for Him. Are you willing to make a fool of yourself for the cause of Christ? Do you have a boundary in your mind--"I will only stoop this low to obey Him"?