I think this is actually about a guy who has a fang, a real fang, one that he can use to open metal cans and scare his ex-in-laws. Sure, in a tertiary way it is about society and being different, but TMBG (and Linnell especially) is fond of writing songs that are very very weird but that can be taken literally nonetheless (like The Statue Got Me High). And yeah, it's hard not to notice that the person who wrote the song is rather snaggle-toothed himself. The song is about what it claims to be about: I've got a fang. I've got a fang. I've got a fang.
I think this is actually about a guy who has a fang, a real fang, one that he can use to open metal cans and scare his ex-in-laws. Sure, in a tertiary way it is about society and being different, but TMBG (and Linnell especially) is fond of writing songs that are very very weird but that can be taken literally nonetheless (like The Statue Got Me High). And yeah, it's hard not to notice that the person who wrote the song is rather snaggle-toothed himself. The song is about what it claims to be about: I've got a fang. I've got a fang. I've got a fang.