I wondered how this thread could have ten replies. Some funny stuff here.
Anyway, from the command reference.
person setMimic mimic
Operand types:
person: Object
mimic: String
Type of returned value:
Nothing
Description:
Set mimic. Following values are recognized: "Default", "Normal", "Smile", "Hurt", "Ironic", "Sad", "Cynic", "Surprised", "Agresive", "Angry".
Example:
setMimic "Angry"