An embarrassing typo or proof-reading failure in an important document.
Named for a proofing error in a British student newspaper which was meant to read "Previous Balls have been well attended"
However, it got published and sent to over 2000 parents and students as "Previous Ballshave been well attended."
Dear Teacher,
I apologize most profusely that my homework referred to King Cunt rather than King Canute. It was a total ballshave.
With deepest regrets,
Student
Student A: Shit - I was in such a hurry to hand in my thesis that I left in those sarcastic comments I drunkenly wrote about my supervisor in the acknowledgements section.
Unsympathetic Student B (laughing): Ballshave!
Editor: I don't mind aggressive journalism, but if we get sued because of a ballshave, I'll have your ass on a plate.
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"