“Snatchers” (*1/2 out of four) was a dumb-and-dumber horror comedy about a disaffected teenager (Mary Nepi) who has sex for the first time and wakes up the next day pregnant with alien twins and all Hell breaks loose in the surrounding town and with her bratty friends (Gabrielle Elyse, J.J. Nolan, Austin Fryberger). Amusing opening but film soon sputters to a witless halt, as it runs out of steam (and brains) pretty quickly. Adapted from a 5-minute short story and short is what it should have remained. Nepi does what she can in the lead but don’t bother “snatching” this one up.