look up any word, like cunt:
what you call a person with a square, large body.
let me reiterate: YOU HAVE NO CURVES!
also, people sleep on you a lot because you're a slut.
girl one: you look like you have a mattress body in that dress. only spongebob would be into you!

girl two: what the fuck? you're the one with the mattress body you whore!

girl three: oh boy! i didnt know we talked this way!
by spongebobmattressbody-pants June 20, 2011