This week, Bill Maher's new rule is Glenn Beck-specific.
In this exclusive preview, Maher offers a common complaint: aren't car alarms annoying? It's not like they work. When was the last time you heard a car alarm and actually believed a car was being stolen?
But car alarms do offer a pretty good analogy for a certain Fox News host. Watch the clip below to hear Maher's new rule and catch "Real Time" Fridays at 10 p.m. EST on HBO.