i think he's saying "dude, i'm so busted! my parents are totally gonna find out that i sold my arms for cocaine!"
nah, just kidding. i like the shading under his chin, and the eyes are pretty nifty. you might want to put some shading/wrinkles on the shirt, and maybe a more involved background. not bad though. great lineart on the head especially. really looking forward to the finished product.

Excellent expression ChibiNay:) good piece of work over all:)

this was actually a lot better before you put the blood and the weird background on it