Where are you going to find someone stupid enough to lend you $500k without assets and income? There are door to door lenders but they charge very high fees (though not nearly as much as pay day lenders) and lend relatively small amounts partially because of the risk of someone without much to lose doing this sort of strategy.
Well you become a NINJA. Probably a bit hard to get one now, but you could always wait for the next bubble...
Scary munchkin ideas are obviously absurd, until they happen.
Thus spake Eliezer:
It seems that many here might have outlandish ideas for ways of improving our lives. For instance, a recent post advocated installing really bright lights as a way to boost alertness and productivity. We should not adopt such hacks into our dogma until we're pretty sure they work; however, one way of knowing whether a crazy idea works is to try implementing it, and you may have more ideas than you're planning to implement.
So: please post all such lifehack ideas! Even if you haven't tried them, even if they seem unlikely to work. Post them separately, unless some other way would be more appropriate. If you've tried some idea and it hasn't worked, it would be useful to post that too.