A day that is entirely taken up with necessary but mind-numbing administration, usually to clear the decks so you can get on with the stuff you're supposed to be doing.
"If I don't get this tax return done today, my head won't be clear enough to finish Ulysses. Time for a Brown Envelope Day." --James Joyce, Trieste, 1921.
Someone or something that bites your ankles.
To a postman, an ankle biter is often known as a dog.
To an adult, an ankle biter may be a toddler.
To hikers, an ankle biter is sometimes a tick.
And so on.
When a man will search for hours to find something that is laying out in the open on a table. Items are often easily found by a women.
Man: "I have been searching for hours for keys."
Woman: "You mean the ones sitting there on the coffee table?"
Man: "Where?"
Woman: "Right there in the middle of that table."
Man: "oh, must have been Male Pattern Blindness"