Mother's Day (1980)

When you go into the woods today, you're in for a big surprise. When you go into the woods today, you're not going to believe your eyes. But this ain't no "Teddy Bear Picnic". Three women discover that two men are willing to do anything to impress Mother, and what impresses Mother is watching her sons commit acts of rape, torture and murder. Now these women are prisoners, lowered to the status of pawns in a game of chess waged between all three of them and two dimwits and their maniacal mommy; thus, the question becomes: can any of them escape from this game alive?