A middle-eastern twist on the Brazilian fart fetish craze. An Afghani Blowtorch is when you hold a lighter in front of ones anus and have them pass gas in your face, putting you in flames.
Guy #1: Dude, what happened to your face?
Guy #2: You know that middle-eastern hooker Kajahl?
Guy #1: Yeah.
Guy #2: She said she wanted to try something new, so she gave me an Afghani Blowtorch! Now my face is just a huge scar from the burns.
Guy #1: KINKY!
Guy #2: I KNOW, RIGHT?!