Pre-VHS, Americans had to rent reel-to-reel tapes and projectors to watch porn. James Mason had a misadventure with a buddy where they rented a porn reel from some seedy shop. Seeing that screen needed to project the footage onto was unavailable, they improvised by using the white shower curtain pinned to the bathroom window. Little did they know that projecting the reel onto that rendered the footage visible from the road which caused more than a few honks from motorists who drove by the house.
The more things change, the more they stay the same.