When you got oral from a girl (usually fat) that is so good compared to other head you got in the past that you feel like she is sucking the soul out of your body with her black magic.
Isaac: Hey I heard you hook up with that fat whore Madeline O'Neil
Joel: Yea, the pussy was as loose as a garbage bag but she gave me Exorcism head so it was worth it
Isaac: You should get tested I heard she fucks black guys
A tasty snack eaten usually before or after an exorcism occurs, either while waiting for the possessed to arrive or for the formerly possessed to stop crying.
1. "It could take a while for Meg to show up Father Jeff. Would you like an exorcism pickle?"
2. "Aw, stop crying you pansy. It was only a demon. Let me eat my exorcism pickle in peace."