A very flat butt. Basically just a nonexistent one.

A delicious food that, when thought of, causes the victim to fly into a hunger induced rage. Symptoms include karate and biting.

Noun

1. A flat thin cake made by pouring batter onto a hot greased pan, and flipped to cook on both sides.

Verb

2. To flatten or squish something.

Adjective

3. Used to describe a situation that isn't quite right or does not add up, usually followed by the word "ass".

4. A person that is fun to be around on multiple levels or "stacks". Usually used in a pronoun context.

5. An irregular or emergency landing in which an aircraft drops flat to the ground from a low altitude.

6. A theory that was drawn up in the aftermath of 911 that remained the official reason for the World Trade Center's collapse until dismissed by the National Institute of Science and Technology. The Pancake Theory insinuated that the towers collapsed due to shear weight of the upper floors slamming on to the floors below them and piling down on top of each other one at a time. The theory was dismissed because of its careless lack of reason and logic and the fact that it completely defies the basic laws of physics.

A boob pressed against a window

1. A gay male.
2. A homosexual.
3. An efiminite straight man.

A car with airbags or hydraulics, which allows the dropping all four corners of the vehicle at once.

From anime,games and webcomic :

To be flatten by something or someone, it is call pancaked. When pancaked, the person is squish to a very small height but more in length, pancaked is use to describe a person get flatten so flat it is like the size of a pancake (Or paper). The person is unable to move and couldn't do anything, and are defenseless. Person who are pancaked can be pick up and throw or turn over.... :D
Usually done by hitting someone with a hammer or a large object falling on them in anime and games.