So did you convince him to get a life-sized Superman "S" on his chest?
Youngblood. The answer is obviously Youngblood.
Emily Strange and Hello Kitty. Start there and work your way into a full sleeve.
I bet this guy also has a tattoo that says "JERK BED FISHBOWL DONUTS" in Chinese.
So, I've just stumbled across this site and I think it's brilliant. (I spent a few years as the only girl working in a comic and gaming store. I'll let you imagine the rest.) I can only hope that upon hearing that, you very seriously said, "Aquaman."