public class MetaMan
{
 public ValueOfAction OpenMouth()
 {
    return ValueOfAction.None;
 }

 public List<ValueOfAction> CloseMouth()
 {
    List<ValueOfAction> returnlist = new List<ValueOfAction>();
    returnlist.Add(ValueOfAction.Relief);
    returnlist.Add(ValueOfAction.BetterWorld);

    return returnlist;
 }
}

public Enum ValueOfAction
{
   None,
   Relief,
   BetterWorld
}