Upset, Shocked, In disbelief, frustrated, RATTLLEDDD!
Usually occurs when something happens a person did not expect or can't believe happened.
When someone gets rattled be sure to call them out on it, usually receiving a response similar or equal to: I'm not rattled!
Yelling rattled in the person's face or shaking your hand back and forth adds to the effect.
Man, we were playing ... last night and Scott got so rattled after he lost!
An old Australian expression meaning to hurry up. Has its origins in the crusted dry dags that gathered in the wool around a sheep's rear end. When dry and hardened they rattle when the sheep runs. Commonly prevented by what is called crutching or shearing the wool around the rear end of the beast.