The "tongue to object" manuever used when checking a 9 volt battery with your tongue.
Going down on a girl for the first time? Use the 9 volt test
Mike: I took that rolly-polly lookin chick home from the bar last night.
Joe: Oh yeah? How'd that go?
Mike: She kept doin the pelvic tilt head push tryin to get me to eat it.
Joe: Did you?
Mike: I wasn't sure if I should or not, so I gave her the 9 volt test.. I had the same reaction you get with a battery.
Joe: Gross
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"