A hollow center blocks attempts to offer anything more than a slightly entertaining diversion, rendering it little more than a second chapter that perhaps was never really needed in the first place.

Judd Apatow is the maestro of the dick joke, the current reigning king of gross-out humor, and the guy who brought you all those hey-bro-let’s-get-drunk-and-get-laid movies. But Apatow’s secret weapon, and the likely reason for...