What is Mushroom Patch?
1.
A place where someone - usually the so-called authorities - keeps their captive audience in the dark and feeds them shit.
If Grabber O'Riley or Doper Limpaw can detect that you are operating off of their sociological mushroom patch they are gonna give you holy hell at every opportunity.
In the great flick the TRUMAN SHOW a very detailed mushroom patch was created by ad boys and girls for Jim Carrey.
See