I have not been so blessed as some of the other folks reviewing this movie. I haven't caught any other films by the lead actress. But I have actually SEEN the movie, not just the trailer.
As for the flick, what with cartoonish characters, plot improbabilities, and obvious reverses, you'd think I'd hate this trifle. You'd be wrong.
Late summer movies are rarely anything other than entertaining. This is not a bad thing. And a chance to see multiple female-on-female fights is brought to hilarious fruition.
Like any good comedy, it is built on a bedrock of tragedy and horror. Our Heroine is a girl who'll do anything to become a co-host on The Today Show. Her dippy boyfriend is the quarterback for the school team who seems destined for a coronary at 20. Her mother is an alcoholic. Her father is a bitter romantic. She stabs even her best friends in the back. Lesbians (or more accurately, women who are perceived as lesbian) are ridiculed. The little brother is a snide, jaded fellow.
Then comes the transfer student. Who, like Eve in All About Eve, watches and waits to take over every aspect of Starla's life. She sucks up the parents, the cheerleading spot, and the dippy boyfriend. Then all hell breaks loose, slowly at first, then with a vengeance. And that is what this movie is about: vengeance.
Funny. Yes. Laugh-out-loud funny? Absolutely. Worth your time? Yes, if you want fairly mindless entertainment. And especially if you love mock battles feminine.
P.S. Slap Her, She's French is a funny title. Not cause for a PC war. This movie doesn't pick on the French any more than the rest of US society. We think they look down their noses at us. That makes us believe it's OK to give them grief. It's not like anyone who views this movie is liable to slap anyone, let alone anyone French.