flyonthewall.buzz is a domain owned by Dartz. It was mentioned in the Family Guy episode "Coma Guy" (S18E17) and apparently was not registered by Fox or anyone prior to the episode airing. The website was purchased by Dartz while half-wasted the night the episode aired, and it brought in some users asking if anyone is from Family Guy.
The song is sang by, appropriately, a fly on the Griffin Family's wall as they are painting their living room after a space shuttle exploded. The Fly advertises the website as a conspiracy podcast, and instructs any users who wish to listen to the podcast to download a VPN and access the website using the Tor Browser. Fortunately in the real world, none of these are required to access the site.