User blog comment:E-114/The Gift Cards/@comment-1378255-20100321160332

@Ben Hun Be forewarned. To hatch a Bad Egg, you have to force it to hatch with an action replay.

In rare cases, very rare Pokemon come out of this.

90% of the time you get yourself DPBOX or Invisible Shiny Bulbasaur.

The other 10% of the time is when you luck out and get yourself something rare.