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general::
Phrase(s): on the horns of a dilemma
Fig. having to decide between two things, people, etc. • Mary found herself on the horns of a dilemma. She didn’t know which to choose. • I make up my mind easily. I’m not on the horns of a dilemma very often.
McGrawhill's American Idioms And Phrasal Verbs
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Faced with two equally undesirable alternatives. For example, I'm on the horns of a dilemma: if I sell the house now I have no place to live, but if I wait I may not get as good a price. This term was first recorded about 1600, but the idea of being caught on either one horn or the other (of an animal) was already expressed in Roman times., see HORNS OF A DILEMMA.
American Heritage Idioms