Dan Aykroyd never got “Ghostbusters 3” off the ground, but at least he gets to be in the third “Ghostbusters” movie.

Dan let the cat out of the bag yesterday when he Tweeted, quote, “On GB set shooting my scene with funny beautiful Kristen Wiig.  Lady GB’S are adorable, hilarious and badass.  Exhilarating.”

There’s no official word on Dan’s part, but a source claims he’ll play a cab driver who, quote, “utters a famous line from the first film’s theme song.”  (We’ll guess:  It’s either “Who you gonna call?” or “I ain’t afraid of no ghost.”)

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