There were a few times when I have seen some yogis and or monks go crazy. One time I saw a possession case when I went to a Kandy forest monastery called, Ulpathkandha. It means Sprint Hill Monastery. I think it was 2010 when I went there. I wanted to use the Internet for the first time in a few years. I wanted to see what this Facebook thing was. I had my brother make me a Facebook account and I was going to see it for the first time. I thought this monastery had Internet because the main room had a computer. However, I later found out that the computer was broken from the lightening storm. Fortunately, they had a donor who invited monks to use his WiFi connection in his home and I made an appointment to go there after a few nights of living at the Spring Hill Forest Monastery, situated deep in the Mountains.