How the name, "Kleenex" (a major brand of nasal tissue) is sometimes spelled, because when you hear somebody say Kleenex it often comes out sounding like, "Cleanax".
{Drake}: Hey Josh, can you pass me a Cleanax?
{Josh}: Fuck you Drake, go get your own goddamn Cleanax!!!
"Cleanage Girl" - Recent Pop-Punk slang for a generally clean seeming teen girl (particularily of the "preppy" nature). The type to wear Holister, American Eagle, Abercrombie, etc.