In programming, a "hot fix" is a quick and dirty code bandaid. This is typically done in situations where software has broken, either from a recent code change, a third party dependency changing, or a server or software dependency upgrade. Hot fixes are like playing with fire because developers will frantically deploy hasty, poorly architected solutions that haven't gone through rigorous testing or review. The hope with a hot fix is to address whatever is blowing up in your software at the moment, as quick as possible, without causing any negative side affects or introducing new bugs. They totally suck.