The act of ejaculating in your partner's cupped hands, where you then dip your finger into said cum cup, and use this finger to draw a cross on their forehead.
Person 1: "Bro this person at church is such a freak, they asked for an unholy baptism!"
Person 2: "...a what?"
Person 2: "...a what?"
by Apple_Nut March 28, 2023
Get the unholy baptismmug.