Term used to signify that you are really focused on your work, often used as an excuse to shoo away inquiring co-workers. Literally means you have your head down permanently affixed to your computer screen.

avoiding eye contact with an aquaintance in a public place.

Following a stupid comment the person who said it must bend at the neck and look at the floor. thus putting their head down in an act of shameful embarrasement. After this the person cannot be made fun of.

An idiom that refers to giving someone preliminary news that is likely to upset or depress them in some way, so that they can prepare for it.

Any device such as a cell phone, iPod, or gps that causes a person to look down while driving or walking. The opposite of a heads up display.

A muppet walking with his/her down due to the fact they are indeed a muppet. Or have taken oart in something muppet-orientated.

An extremely fun and short-lived game we used to play in primary school.
RULES:
1. 2-4 kids are picked from a crowd of, say, schoolkids, in a classroom, who then goto the front of the room.
2. The rest of the kids in the room place their heads on the table so they can't see, but put their thumbs pointing upwards.
3. The kids at the front then proceed around the room and pick out one individual of the people with their thumbs up, and brush their thumbs. (One person not playing the game, usually the teacher, moniters the progress of the walkers and should take a mental note of who was picked.) The person whos thumbs have been brushed pull their thumbs itno their fists so they cant be chosen again. When the walkers have each done this to one person each, they return to the front of the room.
4. The kids sit back up and the ones who had their thumbs brushed stand up (if the number of people standing up exceeds the number of walkers then the game must be restarted, coz somebody's not playing fair) and then have one guess each at who did the thumb brushing. if they guess corectly they become a walker and the walker sits back down, and the whole game starts up again. Pretty cool huh?

TIP ON HOW TO WIN:
1. make a tiny hole out the sit of your arm to try and see through
2. try to set yourself up in a position in which you can see the floor and therefore the shoes of the person who brushes your thumb. compare shoes when guessing.
3. try to make a note of the gentleness or verocity in which your thumb was brushed. If it was a gentle brush and there are two people to choose from, the guy that steals your lunch money and a girl who wouldnt touch a brick for fear of hurting it, then a good guess would assume the girl was, perhaps, the one that brushed you. Be aware that even 7 year old baby bullies can be very sneaky.
4. when your thumb is brushed quickly whip up your head for a look and back down again, and hope no-one sees.

A euphemism for female masturbation.

A cute and charming phrase finished by..."that's the way we like to fuck!" Of indeterminate origin and little utility.