My code returns 2 Chomps after the 12 Chomps and before the try-catch block, however we both fed 6. Can't find the bug.

public class PezDispenser {
  public static final int MAX_PEZ = 12;
  private String mCharacterName;
  private int mPezCount;

  public PezDispenser(String characterName) {
    mCharacterName = characterName;
    mPezCount = 0;
  }

  public boolean dispense() {
    boolean wasDispensed = false;
    if(!isEmpty()) {
      mPezCount--;
      wasDispensed = true;
    }
    return wasDispensed;
  }
  public boolean isEmpty() {
    return mPezCount == 0;
  }

  public void pezLoad() {
    pezLoad(MAX_PEZ);
  }

  public void pezLoad(int pezAmount) {
    mPezCount += pezAmount;
    if (mPezCount > MAX_PEZ) {
      throw new IllegalArgumentException("Too many PEZ!!!");
    }
    mPezCount = pezAmount;
  }

  public String getCharacterName() {
    return mCharacterName;
  }
}

public class Example {

    public static void main(String[] args) {
        // Your amazing code goes here...
      System.out.println("We're making a new Pez Dispenser.");
      PezDispenser dispenser = new PezDispenser("Yoda");
      System.out.printf("The Dispenser character is %s.\n", dispenser.getCharacterName());

      if (dispenser.isEmpty()) {
        System.out.println("The Dispenser is Currently Empty.");
      }
      System.out.println("The Dispenser is now being loaded.\nLoading  . . . ");
      dispenser.pezLoad();
      if (!dispenser.isEmpty()) {
        System.out.println("The Dispenser is no longer empty!");
      }
      while(dispenser.dispense()) {
        System.out.println("Chomp!");
      }
      if(dispenser.isEmpty()) {
        System.out.println("Ate all the PEZ!");
      }
      dispenser.pezLoad(4);
      dispenser.pezLoad(2);
      while(dispenser.dispense()) {
        System.out.println("Chomp!");
      }
      try {
        dispenser.pezLoad(200);
        System.out.println("This will never happen!");
      } catch(IllegalArgumentException iae) {
        System.out.println("Ouch!!");
          System.out.printf("%s\n", iae.getMessage());
      }
    }
}