From the Lord of the G-Strings to San Fernando Jones and the Temple of Poon—for some reason, the porn industry likes to make parodies of famous movies and some people actually watch them. Check out this X-rated guide on sci-fi and fantasy movie porn spoofs and try to understand how anybody can get off on this genre.
https://gizmodo.com/the-ultimate-guide-to-science-fiction-and-fantasy-porn-1217176178
