Content Warnings: Fatphobia (challenged), gore and blood Shaun of the Dead meets Dumplin’ in this bitingly funny YA thriller about a kickass group of teens battling a ravenous group of zombies. In the next few hours, one of three things will happen. 1–We’ll be rescued (unlikely) 2–We’ll freeze to death (maybe) 3–We’ll be eaten by thin and athletic zombies (odds: excellent) Vivian Ellenshaw is fat, but she knows she doesn’t need to lose weight, so she’s none too happy to find herself forced into a weight-loss camp’s van with her ex-best friend, Allie, a meathead jock who can barely drive,…