Of course. I'm familiar with the term.
I know I'm drastically oversimplifying here, but at the root of both conditions (anorexia and bigorexia) is this perpetual self-loathing and inadequacy. Anorexics think themselves too fat and their perceptions automatically hone in on "never been good enough" -- in this case, 'good' means 'skinny.' And bigorexics, whether we're talking dick or bods, never think they're big enough. And either way, these people are unbelievably convinced that no matter how hard they try, they will never fit those societal standards of attractiveness.
But that begs a pretty good question, you know: Why?
Well, if "bigger is" really "better," then I've already answered my own question. Your efforts at PE are designed to balance out the scales against your better hung brethren, whether they themselves were born with their schlongs as is or have preceded you in PE exercises. Your subscription to the bigger/better belief seems less of crucial import than simple understanding; you, like many men, feel just insecure enough with your current size to seek out ways to alter it.
But with the scams and the schemes, the risks, the endangerment -- men still pursue those ends, some to success and others to disasterous results.
I'm not going to discourage you from pursuing whatever makes you feel good -- whether it means you hit the weights on a regular basis or you jelq. No big deal. Would I endorse your practice if it were to an "extreme?" Probably not. If your "obsession" with your size detracted away from your interpersonal relationships, then maybe I'd revise what I'm thinking.
But the ultimate point is, man, at worst only a few select people are going to care that much about your dick. You've got your own issues to deal with if you perpetually think you're not good enough; and I'm willing to bet that partners out there, whatever persuasion you lie, will like what you've got too, even if you don't see it that way. And hey -- if this dick enlargement works for you -- unless you clue us in or you know people who are that well acquainted with your size, nobody's going to know your secret.
...unless you tell 'em what you've done. And how do you think they'll react then?