To be royally fucked either by an unfortunate situation or fucked regardless of preparation. To be shafted is to be utterly screwed over to the point of comfort is needed either from an object or consumption of food or contraband.
Friend - “How do you think you did on that calculus test?”
Me - “I feltbad about it but when I turned it in I knew that I got shafted.”
Shark Island were the biggest band in LA in the 80's, every band copied their style, their moves, everything. Axl Rose ripped off a lot of Richard Black's (Shark Island singer) moves and got famous with them. Yep, Shark Island got well and truly shafted!