If you’re like me, you probably find yourself in front of the television, watching one of the two Ghostbusters movies when all of a sudden it hits you: “I’ve been watching this movie for the past two hours and I have no idea which movie from the Ghostbusters duology it is!”

Well, memorize these handy mnemonic devices and you will never have this trouble again!

If the team is covered in marshmallow goo,
Then you are not watching Ghostbusters Two.

If Ray and the rest are fighting Vigo the Carpathian,
Ghostbusters One is not what you’re watching then.

If the ’Busters are in the New York Public Library,
Is it Ghostbusters Two? Quite the contrary!