Ever since I began working for that Florida vacation rentals website, I have been plagued by recurring nightmares. I am haunted at night by spirits of hotel rooms past.

There was a time when I traveled quite a bit on business. Thankfully, I don't hotels hop any more. But at night I float off to a hotel room far away in time...

The day's work done, I phoned home to check up on kids. It seems there was a shouting match going on in my absence. It sounded like Pandemonium was winning, but Total Bedlam was making some noise, too.

"Can you just quiet down a bit," I said into phone.

"YOU shut up," I heard man in next room growl.

I chose to ignore him. "Come on guys. Can't you just stop fighting for a minute?"

"I'll show you what fighting means" I heard through wall.

"Geeze. I can't even here myself think," I complained into phone.

"Hey! I've had just about enough of you," guy on other side of wall screamed.

Suddenly I got very scared. I pictured a burly, six-foot-two weightlifter smashing his fist through wall. I hung up phone, wondering how thin walls were.

Nothing happened. No fist. No smashed wall. No burly, six-foot-two weightlifter.

I decided to go downstairs for a stress-relief stroll. As I was closing my door, man from next room emerged.

Fortunately, he was no weightlifter.

I was about to ask him why he had shouted at me through wall while I was trying to discipline my kids, when he called to me, "Hey you. I was on phone with my wife. Why did you have to heckle me?"

All of a sudden, I knew how thin walls were.

In fact, I discovered that hotel walls come in two thicknesses: