1
general::
Be forced to regard as lost, ruined, or hopeless, as in Now that both kids are sick, we'll have to kiss our vacation in Florida good-bye. This usage ironically alludes to a genuine good-bye kiss. [Colloquial; c. 1900] Also see KISS OFF, def. 2.
American Heritage Idioms
2
general::
Phrase(s): kiss something good-bye
to anticipate or experience the loss of something. • If you leave your camera on a park bench, you can kiss it good-bye. • You kissed your wallet good-bye when you left it in the store.
McGrawhill's American Idioms And Phrasal Verbs