https://hackernoon.com/you-might-be-using-extreme-go-horse-process-and-not-even-know-it
eXtreme Go Horse (XGH) is a Brazilian meme software development process and should not be taken seriously.
eXtreme Go Horse (XGH) is a Brazilian meme software development process
it became a meme because it is painfully accurate at times :')
The article misses one thing, typically companies that use XGH can't keep most developers around for more than two years. You end up with teams that are constantly changing members and there are usually 2 or 3 very old guys that stick around and doesn't give a shit either way.
When you get to a job and you find that all people are new and there are new teams being created for everything and whatnot that's a very strong signal that XGH is employed on that bussiness.