The act of creating cuts on a chili pepper to then insert it into either the vagina or butt hole (or both) to create an extremely painful sensation. Only the bravest would dare to try this.
Guy 1: Hey man, why did your ex break up with you?
Guy 2: She said she wanted to spice it up in the bedroom, So I gave her The Devil's Finger.
Guy 1: Ha, Be careful what you wish for!
Guy 2: Yeah, But I don't think she wished for a Ghost Pepper.