A Bacon number refers to the trivia game " Six Degrees of Kevin Bacon," in which you try to connect different actors to Kevin Bacon via the films they have appeared in. For example, Harrison Ford starred in "Indiana Jones and the Raiders of the Lost Ark" with Karen Allen. Allen starred in "Animal House" alongside Bacon, therefore giving Ford a Bacon number of two.

To search, just type "Bacon number" and an actor's name into the Google search bar. You will then get a number with the actor's connection to Bacon. (Some non-actors are included as well.)

The game that launched the phenomenon was invented in 1994 by three college buddies, Craig Fass, Brian Turtle and Mike Ginelli. An advertisement for Bacon's film "The Air Up There" appeared on television while the three friends shared a bottle of Southern Comfort.

"Somehow this occurred to us: Kevin Bacon had been in so many different types of movies, it was possible to connect a lot of unlikely people together through his work," they wrote in their 1996 book, "Six Degrees of Kevin Bacon."

And their idea took off.

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