A Quick Laugh

Mother : David, come here.
David : Yes, mum?
Mother : You really disappoint me. Your results are getting worse.
David : But I will only get my report book tomorrow.
Mother : I know that. But I am going to Hong Kong tomorrow, so I am scolding you now.
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A mother and son were doing dishes while the father and daughter were watching TV in the living room.
Suddenly, there was a loud crash of breaking plates, then complete silence.
The daughter turned to look at her father.

Daughter : It's mommy!
Father : How do you know?
Daughter : She didn't say anything!
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