Parody that can be tedious at times

"IT'S always worse the second time around," says Deputy Chief Hardy (Nick Offerman), the police captain who reassigns cops Morton Schmidt (Jonah Hill) and Greg Jenko (Channing Tatum) to the undercover cops-in-schools programme called 22 Jump Street - and it's hard to disagree with him.

The twist in this breezy, irreverent summer comedy and numerically superior sequel to 21 Jump Street (2012) is that the filmmakers readily subscribe to that philosophy as well, taking every opportunity…