The mystical field surrounding a 1980s home computer, mainly the Sinclair ZX Spectrum, that must not be disturbed whilst the computer is loading software from audio cassette tapes. Some people performed highly
sophisticated rituals to prevent loading errors, and others were convinced that games would not load properly if their mum asked them if they wanted a cup of tea whilst loading.
Coined in
the late 90s by a poster on comp.sys.sinclair, who mis-typed "chutney" - the word was then adopted by a fellow poster to describe the
phenomenon above.