The other guy that said this has been downvoted because Hacker News for whatever reason seems to be out of the loop on how this works, but buying illegal drugs

The other guy that said this has been downvoted because Hacker News for whatever reason seems to be out of the loop on how this works, but buying illegal drugs on the Internet is a perfectly valid answer. It's more or less the most accepted way short of a corrupt physician writing bullshit prescriptions of getting steroids and any other performance enhancing drug for athletes. And it's far safer and more effective to do this on the Internet than from some "locally known" source that transacts in cash. Sources on the Internet are illegal but otherwise entirely legitimate businesses. There are large web communities of people who buy and review their products. There are trusted third-party labs that do chemical analysis to prove the purity of a product, and reputable sources advertise that they will and, in fact, actually do reimburse purchasers who randomly send samples to these labs and post the results publicly on known review forums. The fact that the non-athlete universe seems entirely unaware of this quite well-functioning parallel economy does not mean it doesn't exist.