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.
1. Person1: Become a pancake!
*Squish*
Person 2: I'm a
human pancake.....
Person 2: I look stupids, don't I.... No, please don't
pick me up and turn me over!!! Please! Don't!....No...
2. I'm as
flat as a pancake, a my?