When you read the word ugh, what do you hear?

  • [ʌg], which rhymes with mug
  • [ʊx], [ʌx], [ɯx], or [ɯχ], ending with a brief harbinger-of-spitting sound
  • either of the above, depending on context, but sometimes you can’t tell

If you answered [ʌg], as I would have before I began thinking too hard, then how would you spell the spitty word? Similar questions with blech.