it mean some child worker in the fortune cookie factory's little blistered hands weren't fast enough to catch your cookie to insert a fortune before they folded it.
Yahoo poster Hea Dude: OH ! SHITs! Your finished dude it's a sign of very,very,very bad luck U should go back to that restaurant and ask the owner 4 two fortune cookies and U better hope that works.I would have never left that place if I got 2 empty fortune cookies.OMG..Good Luck thank god that did not happen too me.
P.S. That's No Joke!!!!!!!!don't laugh.