one should be so lucky

alternative one will be lucky

1. informalsarcasticIt is highly doubtful: indicating that something is not likely to happen to the person specified.

   So now I'm the Beverly Sills of Broadway, right? Hah! I should be so lucky!

   1970, The New York Times Biographical Service, New York Times & Arno Press, page 660

   3 more examples

   I laugh uncontrollably when I meet women who say, "What if we get equal rights; we'll all be drafted!" My reply is, "You should be so lucky." The male-dominated military are not about to open their last sanctuary to 51 percent of the population.

   1971, Equal Rights for Men and Women 1971: Hearings, Ninety-second Congress, First Session, U.S. Government Printing Office, page 131

   I play my heart out. To have me on his team, he should be so lucky. That's right. When I get chosen, I give everything.

   1983, Larry Ketron, Asian Shade, Dramatists Play Service, page 37

   "You take pictures in here and you're liable to get a rat in one of them!" "I should be so lucky. I've been trying for years to get a picture of a rat at the Intervale Jewish Center without any luck. They refuse to pose."

   1988, Jack Kugelmass, editor, Between Two Worlds, Cornell University Press, page 311