George Carlin uses reality to create humor. Although this was written to be funny, the reality of it is scary. He wrote this because many people out there would be able to associate with and get a chuckle out of it. It's not verbatim, but close and comes from his "Things I hate" routine. I truly believe this is the view that many people who pass me every day have of cycling.
"I hate bicyclists. They're toys! Leave them in the yard! They have those special little helmets for their special little heads, and they're always sticking their arms out to let YOU know where THEY'RE going. I'll tell you where you're going! Thirty feet straight up in the friggin air when Michelin meets Nike, that's where YOU'RE going!"
I ride like every car coming up behind me has Carlin at the wheel.