Ever wonder how a square disc will fly? Check out the Oxymoron, a non-PDGA approved "disc" that is absolutely the weirdest flying projectile we have ever seen. Doomsday says it was "released into the world purely for the curiosity of watching a square fly." It has a round inside rim on the bottom of the square top to give you some semblance of gripping a regular disc. The disclaimer below pretty much sums it up...
Disclaimer: While it’s made to be thrown, it may behave unpredictably in flight due to its unique shape. By purchasing this product, you acknowledge that it is a novelty disc and that you accept all responsibility for its use. Doomsday Discs is not liable for any injury, property damage, confusion, or existential reflection that may result from throwing it. This disc is not designed for sanctioned play, serious competition, or situations requiring predictable outcomes. If you choose to throw it, please do so responsibly, away from people, pets, or fragile realities.