I'll let the great Mitch Hedberg answer for me:
"I saw a commercial for an above ground pool. It was thirty seconds long. You know why, because that is the maxiumum amount of time you can depict yourself having fun in an above ground pool. If it was thirty one seconds the people in the pool would be saying, What do I do now, should I throw the ball back to Jimmy? Or, should I put on goggles and look at his feet?"
(Pic related -- It's Mitch Hedberg and my friend, Brian)
