Yes there are. Silly words, made-up words, grammar mistakes, nonsensical lyrics and vulgarity are all regular components of English language entertainment (especially from my country, the United States). Welcome to the strange and linguistically challenged world of Western entertainment! It might be great for improving your English listening comprehension, picking up some new slang and idioms, or learning about our culture(s), but it is not the best choice for learning grammatically correct or sophisticated English!