It's about Billie Joe coming out about being bisexual.
'Skeletons come to life in my closet' - all these things that happened to him before make more sense now that he's figured out about himself.
'I found out what it takes to be a man' - Just because he's bi, doesn't mean he's less of a man.
'Mom and dad will never understand' - He's scared that his parents will stop loving him because he's bi.
It's about Billie Joe coming out about being bisexual. 'Skeletons come to life in my closet' - all these things that happened to him before make more sense now that he's figured out about himself. 'I found out what it takes to be a man' - Just because he's bi, doesn't mean he's less of a man. 'Mom and dad will never understand' - He's scared that his parents will stop loving him because he's bi.