Dude, your smile! I'm pretty sure it melts panties.
Whatcha mean? The biceps is on the inside of the arm, facing the chest. If you're talking about the outside of the arm, facing away from the chest, that's the triceps. Most folks who do any weightlifting, even just casually, will exercise both muscles since focusing on one and ignoring the other is kind of pointless (you need both to be strong.)
Also, Bathory that pic is freaking awesome. Where is it, anyway?