Just in time for Mother's Day weekend comes two eminently bland, safe, and unmemorable movies that generally waste their female stars. Melissa McCarthy has proven herself one of the most funny and dynamic performers in comedy, but Life of the Party is a listless and groan-inducing back-to-school comedy that feels tonally off, adopting the persona of its tacky, talky, and awkward middle-aged mother. You would think the premise would lead to plenty of R-rated shenanigans, but instead the film adopts a very sedate PG-13 atmosphere, dulling the wild collegiate experience into something so predictable and safe as to be completely inoffensive. It feels like a caricature reminiscent of a feature-length rendition of a Saved by the Bell: The College Years. McCarthy falls back on tired, corny jokes that don't attempt to be anything else, and the supporting cast is left to gasp and grasp for anything to spark laughs (special credit Gillian Jacobs for doing everything possible as "coma girl"). McCarthy is best when given room to improvise and discover interesting odd angles for jokes, but she also needs a stronger comedic vision, and that's not going to come from husband/co-writer/director Ben Falcone (Tammy). It feels like they had a general outline for a comedy and, in grand collegiate tradition, pulled an all-nighter and sloppily finished a serviceable draft. I chuckled about four times, mostly involving an exuberant Maya Rudolph and the one clever structural payoff revolving around a much younger fraternal hookup. Mostly, Life of the Party lacks a sense of stakes, credibility, surprises, development, and laughs, though the middle-aged mothers in my preview screening lapped it up, so take my opinion with a grain of salt if the trailer seemed moderately appealing for you. Nate's Grade: C-