'Shrooms' (2007) Paddy Breathnach. 

Hey!! You can certainly tell that the director of 'Shrooms' is clearly a Fungi!!! As his psychoactive, backwoods B-Horror proves to be a modestly tasty, plant-based terror trip into Holiday hell, as a libidinous group of boorish American tourists fatefully experience the disturbingly literal side effects of their wasted weekend in the country! Breathnach's vegan friendly frightmare, while, perhaps, having mushroom for improvement isn't a toadstool disaster!!! Offering hungry horror hounds a modestly macabre midnight feast of generously acid-fried mayhem, with a satisfyingly sinister high! The fun, albeit simplistic Emerald Isle-set shocker 'Shrooms' features a fearsome, forest-dwelling, shadow 'stalking', psilocyblin-popping psycho who just might get you terminally off your nut, mayte!