Other Tutorials:

billi billert (demonstration)

     The Oy-Oy is variation of the Yo-Yo in which an outside ball is carried underneath, instead of above, the center ball. The Oy-Oy is slightly more difficult than the Yo-Yo, however once you have learned the latter this trick should not give you any problems. It would probably be best to start out practicing just the "fake" part of the pattern (like you did when learning the Yo-Yo), and then combine it into the Columns pattern.