Haha. It’s an inside joke from the person who made this post. OP is, i believe, a Bitcoin guy who has interacted with the Monero community
Since you asked, Monero is a privacy-focused cryptocurrency. You can buy some cool stuff online with it, like 1 month VPN access from Mullvad, using xmrbazaar.com which is an eBay like site which accepts monero, and VPS and domain names through njal.la
Definitely a pretty niche thing but it’s a growing community. We don’t show up much on the internet because of the privacy-focused thing; we don’t really frequent twitter, etc, although some do.