http://www.conservapedia.com/Sudden_Jihad_Syndrome
Sudden Jihad Syndrome is a term Daniel Pipes coined to describe Muslims that suddenly or unexpectedly turn against civilized, Western society and engage in acts of terror. Pipes has argued that due to this phenomenon all Islamists must be considered potential terrorists.

You do have to wonder if post office workers also suffer from this then.
I guess we have to treat all of them as terrorists too.
Daughter: Daddy! Daddy! Look, its the mailman!
Dad: Well it sure does! Except he looks like he has his bag strapped to his front...
Daughter: Why does he have it like that Daddy?
Dad: I don't know, I'll go investig-
Fox news: Earlier today, there was an explosion in a neighborhood where a mailman was seen with a bomb strapped to his chest. It is clear that this man was Islamic and was performing a Jihad against this neighborhood, possibly for Al Qaeda. No remains were found, and mailmen are now being thoroughly checked for any explosives and double checked if they are Muslim. More news at 6 where we give you facts straight from conservapedia.com!