The Cow Knocks Twice (1992)
Young teens Scott, Jeff, and Jason accidentally stumble across a mysterious grail which they discover to be The Drinking Glass of Elvis. However, the grail carries with it a curse that unleashes a nefarious cow upon them.
Young teens Scott, Jeff, and Jason accidentally stumble across a mysterious grail which they discover to be The Drinking Glass of Elvis. However, the grail carries with it a curse that unleashes a nefarious cow upon them.