Here's a black, 14 oz ceramic mug featuring an image of Iron Man and the denoted proclamation that he is, in fact, a fan of heavy metal.  The music, one would think.  Or...quite possibly, he enjoys heavy metal as in the substance since he is, in fact, sheathed in it!  Yes, we could go either way, I suppose, and therein lies the irony from a bit of  easily woven wordplay. Maybe. Sort of.   Crap, I just used the word, "Irony."  Damn it!!!!  Uh, Iron Man drinks a lot of coffee these days.  Yep.  Not that other stuff.  Nope.  The other stuff...?  That causes Iron Man to crash into farmland or take out a protected forest or two. Nope, no more of the other stuff.