I may already be insane

On the way to work, I passed a guy who was yelling at the street.
"He must be crazy," I thought to myself.
He was sure acting crazy.

Was there a moment in his life that the crazy switch flipped?
Could he feel it coming on?
Or did it sneak up on him in his sleep?

Does he know he's crazy?
Does he even care?

I'll tell you what's crazy:
Those extra-baggy pantaloons kids are wearing these days.