‘Mandy’ is an LSD-infused nightmare and if you’ve seen it, this next sentence won’t sound weird at all. When a gang of demon bikers known as the Black Skulls are summoned to beat up Nicolas Cage, you need to pause to fully appreciate each of them – the medieval knight rammed full of spikes, the one with nails sticking out of his arms (which is nothing compared to his bottom half), and yet another with a mask-like face that looks like dripping, peeled, albino-white flesh.