If I saw someone with a Spiderman shirt on I'd probably think they were obsessed with comics.
My friend has this Wolverine shirt.
http://tinyurl.com/3llkryk
Or it could be an even more subtle version.
Just out of interest, would you still think that? Personally I think that shirt looks more "badass" than it does "wolverine".
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"The great fallacy is that the game is first and foremost about winning. It's nothing of the kind. The game is about glory." - Danny Blanchflower