I keep coming up against players who do this specific skill move, and it really puts me off when they do it. Seems pretty useful for confusing the opponent and creating space, but I've no idea what it's called so I can't find it anywhere online.
The player on the ball basically feints his body to the left and then the right really quickly, while keeping the ball at his feet. You can then obviously exit whichever direction you want after the feint is done. It's not a fake shot or Croqueta though.