ExtraBall (Clicking on these links daily you support ALRNCN's work. They're collaborators or sponsors and, by visiting their sites, they like us even more)
The pose of the scorpion, kamasutra apart, is when the feet of the person raise behind his head, something similar to a scorpion attack... Watch these videos as an example.
Scorpion was one of the most recurrent characters in the beginnings of Mortal Kombat, as were Sub-Zero or Reptile, because they were dressed as ninjas. They were like Ryu or Ken in Street Fighter. Here you can see him in a real combat and I've also added some videos to view the evolution of his "Fatalities".
# Watch videos
ExtraBall
A Fatality is what could have happened here. Fake? I don't know. I don't think so. There're more photos. We've always been crazy.