Squeezing

Squeezing

Entering a square which requires you to squeeze counts as difficult terrain.

If you end your turn in the same space as another creature, and each of you normally takes up the full space, you are both considered to be squeezing. Squeezing can only occur if the two creatures sharing a space both agree to allow that to happen, or one creature is unable to prevent it (such as being unconscious or stunned). Even if one of the two creatures sharing a space is prone, both creatures are treated as squeezing. However, if one of the creatures is dead, the squeezing rules do not apply. Instead, the dead creature is treated as rough terrain (GM's may elect to ignore the 'dead creatures are rough terrain' rule, since it's kind of annoying to keep track of).

Squeezing can also occur when a character tries to fit through a space that is designed for creatures one size category smaller than he is, but wider than his head. No creature can pass through a space narrower than its head (unless it has some special ability allowing it to break this rule). An example of a narrow space might be a door designed for size-small creatures. A medium-sized creature could fit through there, but their ability to attack or defend themselves while doing so would be greatly impaired. A large-sized creature couldn't fit through the size-small door at all.

Squeezing:   Entering a square which requires squeezing is treated as difficult terrain. While squeezing, a creature suffers a -4 penalty to attack rolls and a -4 penalty to AC.