go hang

Verb

 * 1)  To be cursed; to be unworthy of notice or bother.

Usage notes
Most frequently encountered used optatively or subjunctively through use of modal verbs such as can, may, or let. Inflected forms without modal verbs are rare in modern usage but can be seen in quotes like the following:
 * Wherever money comes in at the window, "discipline" flies out at the door, even if it be not quite the case that "wisdom goes hang." (1902)
 * It began, of course, as a temporary expedient, but was found so convenient that principles went hang and the Cosmans as a body became employers of labour. . . . (1913)