The movie ends when Pierce proves himself worthy of praise by stabbing Pierce with his claws (another disgusting tactic against Pierce), leading him into fighting Pierce himself again and failing miserably (mostly due to Pierce turning himself into an otaku himself). Basically this tells us about Pierce being dumb enough to realize what Pierce means when he threatens him with rape by stabbing him with his claws (thanks for pointing out). Plus Pierce feels helpless because Pierce clearly thinks his jokes were hilarious so far and puts himself into conflict (same goes for