Mystery Theme II by SokolM

Question 15

What four-word idiomatic phrase, which arose from the practice of giving certain items (a Cohiba or Montecristo, perhaps?) as prizes at 20th century carnivals, ties together all of the correct answers? The phrase could also be considered even more directly and thematically linked to the answers for Q4 and Q10. I might even say it while grading some of your answers.

Close But No Cigar ("Weird Al" Yankovic) - All Correct Answers are Mentioned in the Song