It's a poser thing to do. After all, think about it. Alexi copied the fingers tatoo from Ozzy so he tatooed cobhc letters on his own fingers, then he had a reaper tatoo on his arm and then you want to have a cob tatoo too, either it is letters or reaper (if you've reached a decision yet!). Yeap, it's a poser thing to do. What do you have in common with cob anyway? Are you so die hard fan that you wanna do that? Besides, I don't think that you're going to have a tatoo after all. If I wanted one. I would already have come up with the context and I would already have one on my arm (here's a good place to have one, for instance). And why hide it if you have one at last? Stupid thing.