Somebody calls me on the phone
Say hey-hey-hey is Arty home
You wanna take a walk
You wanna go cop
You wanna go get some Chinese rock [ Lyrics from: http://www.lyricsmode.com/lyrics/r/ramones/chinese_rock.html ]
I'm livin' on a Chinese rock
All my best things are in hock
I'm livin' on a Chinese rock
Everything is in the pawn shop
The plaster fallin' off the wall
My girlfriend cryin' in the shower stall
It's hot as a bitch
I should've been rich
But I'm just diggin' a Chinese ditch
Chinese rock is a form of heroin, therefore this song is about drug addiction. The line "everything's in the pawn shop" is referring to an addict selling all their stuff for drug money.