Evil Bong (2006)

In "Evil Bong" (2006), a group of college students purchase a mysterious bong that transports them to an alternate reality where an evil sorceress traps them in a nightmarish world. The main conflict revolves around the students trying to escape the clutches of the malevolent Evil Bong and her wicked schemes. Facing psychedelic and bizarre challenges, the characters must work together to find a way back to their own reality before it's too late.