Danica (Tika Sumpter) has a great job, a gorgeous apartment, and a nice boyfriend named Charlie. Her perfect, pretty life is about to be disrupted when her sister Tanya (Tiffany Haddish) crashes with her post-prison. Tanya is impressed by Danica’s lifestyle but dismissive of the hard work it takes to achieve and maintain it. And she’s immediately suspicious of Charlie, a year-long relationship that’s taken place solely over the internet. She’s about to blow shit up.

Meanwhile, Danica innocently starts her days at her favourite coffee shop where owner Frank (Omari Hardwick) pines for her and plies her with free caffeine. Danica is faithful to Charlie but Tanya sees potential, and enlists Danica’s friend and coworker Kalli (Amber Riley) to help shake things up. So now Danica has a tough choice to make: the perfect on paper Charlie who she’s never even met, or the rough around the edges Frank who is kind to her but doesn’t meet all her requirements.

Even as I’m writing this, I’m reminded again what a fine premise this is. It’s just too bad that Tiffany Haddish ruins things by being off-leash one too many times. The movie and its story get totally derailed by her constant mid-scene stand-up specials. We get it, Haddish: you’re funny. I don’t even disagree. But there’s a time and a place and director Tyler Perry is too cowed to tell her that. So off she goes, improvising her little heart out, destroying any momentum the film’s earned, and any interest the audience has. I was so put off by Tanya’s constant threats against her sister’s life that for me, the only real comedy came from Whoopi Goldberg, who plays their pothead mother.

Nobody’s Fool failed to win me over, and I refuse to be made a fool by it. There are good ingredients but Tyler Perry doesn’t quite mix it right, or in the right proportions, so the resulting cake is undercooked with uneven flavour.