What do you call a boomerang that won't come back?

This joke is a delightful exercise in wordplay and the subversion of expectation. The humor stems from taking an object known for one very specific, almost magical, characteristic – its ability to return – and then stripping that characteristic away. What's left isn't a broken boomerang or a failed experiment; it's simply its most basic, unspecialized form, making for a perfectly mundane punchline.

Boomerangs have a fascinating history, dating back tens of thousands of years, with examples found in various cultures, including ancient Egypt and Europe. However, they are most famously associated with Indigenous Australians, who used them for hunting, sport, and ceremony. Not all boomerangs were designed to return; many were "throwing sticks" used for hunting that would fly straight. The returning boomerang, with its unique aerodynamic design, is what captured imaginations worldwide and became the iconic image.

The joke cleverly plays on this popular understanding of a boomerang's essential nature. By denying it the one thing that makes it unique, the punchline delivers a satisfying, albeit simple, logical conclusion that makes us chuckle at the obvious. It's a quick hit that relies on our shared knowledge and a bit of linguistic trickery.