No wrongs allowed

After the children finish their daily assignments (usually math equations), we go through their answers, marking each with an X or a check.  Pia goes ballistic each time an X is made in any of her answers, as she gets teased by her elder brother and is thus under pressure to always get her answers right. (Not that Dominic always get his answers right the first time)

One day, Pia finishes her assignment and submits it to Mommy:

Mommy: (checking each answer). This is right...this is right... this is wrong...

Pia: (Groan).  Mommy! NO MISTAKES ALLOWED!

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