Chernobyl
Definition
A city in northern Ukraine, formerly in the Soviet Union, located about 100 km north of Kyiv.
The site of the Chernobyl Nuclear Power Plant, where a catastrophic nuclear accident occurred on April 26, 1986, releasing massive amounts of radioactive material and causing widespread contamination.
By extension, any disastrous failure or meltdown, especially in technology, projects, or situations gone catastrophically wrong.
Examples
My attempt at baking a soufflé turned into a Chernobyl faster than you can say 'evacuate the exclusion zone.'
The office printer jammed again, spewing paper like it was auditioning for Chernobyl: The Musical.
His cryptocurrency investment portfolio went full Chernobyl after that one tweet from the wrong influencer.
The family road trip devolved into Chernobyl when we realized we'd packed three flat tires and zero snacks.