There always seemed to be a fine line between "metal awesomeness" and "homoeroticism"
For example: Thor - is that a big sword or are you just happy to see me? Venom - more phallic images : skull staff or stripper pole, Chronos? Bathory - (RIP Quarthon!) Raven - I hate to admit I owned this album. Never noticed they wore undies before.
Probably a ton of other examples (even without dipping into hair bands) as well.