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Phrase(s): don’t give a hoot (in hell’s hollow)
Rur. to not care one bit. (Also with doesn’t. Don’t used with all persons is folksy.) • Mary: Joe left town. Are you sorry to see him go? Tom: No! I don’t give a hoot in hell’s hollow. • She’s a devil-may-care young woman, doesn’t give a hoot about anything.
McGrawhill's American Idioms And Phrasal Verbs