blue flu(redirected from a blue flu)
A fictional illness that is said to be affecting police officers when many of them call in sick to disrupt operations, especially where striking is illegal. (The police often wear blue uniforms, hence "blue.") If that many guys called in sick today, I suspect there's a blue flu going around.
1. n. an imaginary disease afflicting police officers who call in sick during a work stoppage or slowdown. (Journalistic. Occurs where strikes are illegal.) Another epidemic of the blue flu struck the city’s police officers early today.
2. n. a hangover. He was out late last night and has the blue flu.