What do you call a musical insect?

This joke is a delightful example of wordplay, where the humor springs from the clever combination of sounds and meanings. The punchline, "a humbug," immediately makes you think of an insect that "hums," like a bee or a mosquito, perfectly fitting the "musical insect" setup. It's a simple, straightforward phonetic connection that makes the initial chuckle.

However, the joke offers a second layer of amusement by tapping into the more common understanding of the word "humbug." Beyond just a buzzing critter, "humbug" is widely known as a term for something deceptive, a trick, or even just plain nonsense. This meaning was famously popularized by Charles Dickens' character Ebenezer Scrooge, who frequently exclaimed, "Bah! Humbug!" to dismiss anything he found disagreeable or insincere. So, a musical insect being called a "humbug" is not only a literal sound association but also a witty, unexpected jab, implying that perhaps its music isn't all it's cracked up to be.