Just close your eyes and listen to the audio. Only time I've heard a man make sounds like that was in Al-Qaeda beheading video. See more from this awesome couple here: 1, 2 and 3.
When I posted this clip 2 years ago I somehow left out a key component - the scene where he seperately inserts his arms, left leg, and entire head into her vagina. Seeing as this is the most popular video on eFukt, I think it's about time the full version was posted.