Bob and bill the comic strips!

[Scotteh]

use your imagination

[CrematedPumpkin]

Well, it's just that, although it may not be intended to be hysterically funny, it just doesn't make sense. It needs to be somewhat understandable to be funny at all. "You're pissed aren't you?" is just random and doesn't at all pertain to the actual thing...just something to keep in mind. And you forgot a comma after "pissed" (I'm sorry, but I a grammar freak  )

[Terley]

..And 'Should we kill him....' should have a question mark at the end. 

[ep]

I can understand what is going on just fine but I think it might follow a bit easier if instead of being "should we" you have "we should"

Also if you distinguish the two a bit more, maybe with just a logo/pixel on the shirt

[rabidbaboy]

Umm, to me, I think it just says that the other guy is a sadist/psycopath, and just wants to kill out of fun. Dark humor, you know.
imo, VERY simplistic.