I'm sure you've heard the commercials, and the phrasing of this symptom puzzles me. Even if you are having marathon sex with two hot, insatiable coeds, a four-hour erection seems insane. It's like they consider the 3-hour mark tolerable.
But even worse is that they advertise at all hours. God help you if you want to watch a baseball game with your kid, you will be bombarded with this shit.