It has been an item of folklore that a "pressurized" aircraft cabin, if punctured will force people through the aperture, a la Goldfinger. However, obviously the pressures inside the cabin (12 PSI) are nowhere near strong enough to move a human body (For reference, a can of coke is at about 40 PSI). To start throwing bodies out of windows, I would expect pressures over 100 PSI would be necessary.
Nevertheless, despite this folklore, it has actually happened at least three times in real aircraft, most recently just this week in China.
So, I imagine the actual cause is not the pressure of the cabin, but the Bernoulli effect of air rushing past the window at 450 miles per hour. What kind of pressure differential will develop if air goes past a 20" x 12" window at 450 miles per hour?