The sentence uses a hyperbole to describe the mess in the kid's room. It is also a metaphor, because it uses literal language to describe the subject. A hyperbole is an extreme exaggeration, used to emphasize a description of something. In the sentence, the hyperbole is "...a disaster area." The room is not actually a scene of a disaster, but the phrase is used to show that there is a large mess.
PETE THE CAT... Rocking in my shoes an the first day of school.The bus came and everone was like look at PETE the cat rocking in his new school shoes so when he was in reding math science and the library he was singing I'm rocking im rocking in my new school shoes.