In informal contexts, "swingers" could refer to people who engage in swinging, a form of consensual non-monogamy where partners have sex with other people. "Fixed" might imply something being resolved or corrected. Interpretation 2: A Technical or Mechanical Context In a more technical or mechanical sense, "swingers" could refer to parts of machinery that swing or move back and forth. "Fixed" would then mean repaired or made stable.