Ghostbusters Reboot: 29 Easter Eggs, References & In-Jokes
10. The Exorcist Gags
There are actually a couple of nods to the seminal Exorcist: first, the very first ghost vomiting copious amounts of ectoplasm all over Erin is pretty reminiscent of Regan's projectile spewing.
Secondly, Abby Yates borrows Regan's creepy 180 neck turn during her possessed fight scene with Patty and Holtzmann...
And then Patty utters the immortally terrible line "the power of pain compels you" to the eternal pain of every audience in attendance, presumably.