You're falling ceiling remark reminded me of the time, many years ago, when I was slipped a hit of acid. (Yes, I didn't know it was slipped, I swear)

We were watching the Michael Jackson "Thriller" video and all I could see on the walls were Michael's demon eyes. When we went outside I swore the stars were smacking me in the face, and I was ducking for cover. I had no desire after that to be anywhere near that shit again.