A Zimdar can be set off when you meet someone and during conversation you receive the notion that he/she is conceited (i.e. believes everyone else is below them; thinks he/she is always right and noone else is).
My Zimdar goes off whenever I'm in a conversation with Chuck since conversations with him end up with him correcting me on topics I've already researched, or have in-depth knowledge about.
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"