Because they hadn't planned to have him along, they make arrangements with the hotel when they arrive to put a cot in their room.

The first day goes well, and they meet another family at the resort with a son about the same age.

The next afternoon, the couple are dying to have sex, but don't know what do to about their son. They finally agree he'd be fine on the balcony for a little while, and they tell him they want him to go out and report on what's going on outside.

He steps onto the balcony and they close the screen and the blinds behind him. His dad says "Go ahead, son, tell us what's happening today."

"Okay", says the boy, "There's a tour bus coming in right now, and lots of people getting off". A few minutes pass - "A little girl just lost her blue balloon and it's flying up into the sky".

"There's a dog playing frisbee on the beach with his owner, oh, and the people we met yesterday are having sex".

The parents jump up and run to the balcony. "How do you know that?"

"Their son is standing on the balcony across the way"