Sci-fi-bi is the act of liking both Star Trek and Star Wars. Both of which are heavily disputed amongst the opposing fans. Someone who is sci-fi-bi does not participate in discussions asking "can Vader crush the entire borg race with his mind?" or "could Captain Kirk kick Luke Skywalker's ass?" Instead, a sci-fi-bi knows that both are of differing worlds and therefore are not able to be compared in any way.
"Which is cooler, Star Trek or Star Wars?"
"I like both...I'm sci-fi-bi."