Let's say you loved the first Big Momma's House. Let's say it's your favorite movie of all time, the funniest thing you've ever seen. Here's a bet: Even you will be tired of this sequel long before it's over. Martin Lawrence returns to the big flowery dress and the gotta-cause-an-allergic-reaction fat suit so he can avenge his mentor's death and save the United States from a national security issue.
Along the way, he plays nanny to the children of an irritating type A mom, ducks his FBI superiors and keeps it all a secret from his wife (Nia Long), who wants him safely in a desk job. Our payoff for keeping track of all this? An exhausting, not-hilarious, multiple-resolution ending, in which Big Momma does funny dances with a cheerleading squad, runs on the beach like Bo Derek and chases down the bad guys--all while fat. That's the punch line, you see. Too bad it's not a funny one.