We had this one strange guy in our neighborhood who liked to build strange things in his house. Well I guess one day he decided to take his hobby outside and build a tree house in his backyard. Our HOA president was a city councilman at the time, and he was not happy in the slightest. This literally turned into a two year dispute where the HOA would keep asking him to add safety measures to the structure in hopes that he would eventually give up, and dismantle the tree house.
Eventually, the HOA told him that he would have to have the plans signed and stamped by a qualified engineer saying that the structure was safe.
At the next meeting, he handed in the blueprints signed and stamped by no other than himself. That was a great meeting.
It turns out that he had a PhD in civil engineering, and there was only one guy in the room that didn't find it funny.