Definition
A day when things seem to be unmanageable or go wrong.
Origins
Said to have been coined by British trichologist Philip Kingsley (1930–2016).
In Context
- "What's the matter with Fred? Oh, he's just having a bad hair day."
- "Okay, girls, here’s the plan. I’ll call Jerry and tell him we need to get to Tahiti A.S.A.P. Clover, you free the Bees and restore their memories. Alex, you figure out how to end this very, very, very bad hair day."