Ready or not, here it comes: “Four Lions,” a British comedy about four jihadists determined to strike a blow for their cause. But these guys are so dumb and inept, they make the Three Stooges look like Yale grads. If all terrorists were like these idiots, the US would have nothing to worry about.

The director, Chris Morris, has been successfully making TV and radio comedies for 20 years. But he falters in this, his first feature. He’s taken what might make a funny sketch and forced it to run more than an hour and a half.

There’s just not enough funny material to warrant the length.