Code Nightmare
Noun · Slang & Abbreviations
Definitions
A coding situation so messy, risky, or frustrating that it feels like a bad dream. In engineering slang, a code nightmare usually involves both technical difficulty and the dread of what touching it might unleash.
In plain English: A terribly difficult or frightening code situation.
Example: "The database recovery script was a code nightmare, full of silent assumptions and just enough success history to keep people afraid of rewriting it."