When doing a girl from behind the guy puts his hands like a mask around his own face, much like a the mask "The Phantom" Is wearing, by putting the thumb and the finger next to it togheter forming a Cirle. The rest of the finger are to point straight out from the cirle then flip it on to your face. (most ppl probobly know how to do this mask) So doing a girl from behind with your hands as a mask over your face. (The girl is not suposed to know whats going on). The Phantom Fuck Has its roots in the swedish music festival "hultsfreds festivalen". Were you got points for phantom fucking girls.
There are many diffrent ways too Phantom Fuck. Ysing only one hand creating a half phantom. Or doing Anal Creating Anal Phantom Fuck. Or my own favorite; Black midget Anal Phanom Fuck. As you might understand this is when you Are giving a colored midget anal sex while doing the phantom.