* 1/2In the cheapjack horror flick "Decoys" - which might more accurately be entitled "Sorority Chicks from Outer Space" - aliens disguised as blond co-ed bimbos terrorize a college campus by turning horny frat boys into freeze-dried fudgsicles. Luke is the freshman who uncovers the plot but can't get anyone to believe him.Set on one of those college campuses in which the students pursue everything but their academic studies, "Decoys" can't seem to decide whether it wants to be a straight-ahead horror outing or a parody of the genre. Unfortunately, it fails miserably at both, being neither scary nor funny, just idiotic and lame. Although there's a reasonably diverting twist at the end, the movie can't overcome its silly script and cheesy special effects. Send it to the trash bin.