When a girl is vomitting in the toilet and you are fucking her from behind.

shitting, excreting (turkish).
in turkish 'excorcism' is translated as 'bringing out the devil/foul spirits from someone/something'. so figure out resemblance with 'shitting'/'excreting' :).

evocation may be used for similar purpose

When a Male ejaculates into his own hand, and begins the motion of frantically flicking his own semen into his sexual partners face, screaming "The power of christ compels you!" or, "The Devil is a liar!".

It’s when the devil tells the priest to exit the child’s body

The removal of a computer virus that has infected your system to the point where it has become unusable. Often preformed by a person of superior computer knowledge. A geek. Generally but not always associated with a program that continually preforms unsolicited scans of your computer and informs you of numerous fake critical errors that it will gladly repair once you have provided the cyber thieves with your credit card information.

To defecate and release from your bowels a shit that is so vile, so wicked and so nasty that your body and mind are released from the possession of a demon turd. A Rectal Exorcism evicting demon turds may appear to be an elaborate ritual or may be performed by commanding the turd to depart in the name of a higher power, usually begging for release.

The act of your body evicting tainted food from your guts.