Do you think it's funny when people purposely butcher words and songs?
Another aspect of Miranda's humor stems from her unflinching self-confidence -- or delusions. She genuinely believes she's the shining beacon of perfection. The personality trait manifests itself in big things: her performances, her view of herself as a romantic catch. Also, in small things: her sense of style, how she pronounces and spells words. (Magician, for example, is "magichin.")
As Miranda's family members learn, it's fruitless to try to convince her she isn't an authority on ... well, everything. She's the type of person who would say she sings the best rendition of Whitney Houston's "I Will Always Love You," or Wicked's "Defying Gravity." The truth, of course, is her nasally voice, stilted choreography, botched lyrics, and twisted facial expressions make those songs (and others) hilariously awful. In Haters, Miranda's obstinacy at once keeps her going and nearly ruins her. It might do the same to you.