Dark Harvest (2004)

Adopted man Sean inherits a farm when his biological father dies in Dark Harvest (2003). He and his girlfriend leave to party at the property, bringing two couples (including a pair of lesbian lovers!) along for the ride. En route a crotchety old storekeeper warns that the land is lousy with the ghosts of murdered farm hands! Still the kids continue on in their quest to rub their bare asses in the grasses. Things are hot among the horny hipsters until they run out of ice. Returning to town, Sean meets a mysterious woman (the ghost of his great-grandmother) who tells him of the farm's fiendish history: His great-grandfather struck a pact with the devil in exchange for a plentiful crop. Good ol' grandpappy watered his garden with the blood of his help and disguised them as scarecrows. During the Blood Moon tomorrow the victims will be back with a vengeance. When he must reap the sins of his kin, will Sean and his friends still be able to hump happily amidst the sinister background of the dark harvest?