Hot Box of Rocks

A person (usually female) Who is very attractive, yet not very smart.

Hot = Their physical appearance
Box of Rocks = what occupies the place where their brain should be

Chicken or Fish? Really?!?!?...Man that Jessica Simpson is one Hot Box of Rocks!

Phillip: "So, are you gonna start dating that girl from Jersey?"
Charles: "Nah she's only booty call material, turns out she's just a Hot Box of Rocks"

"Dude let's go to the bars tonight, my cock needs a Hot Box of Rocks"