"Now, you two -- this year, you behave yourselves. If I get one more owl telling me you've -- you've blown up a toilet or --"
"Blown up a toilet? We've never blown up a toilet."
"Great idea though, thanks, Mom."
Molly and the Weasley twins

Harry Potter and the Philosopher's Stone - Chapter 6 : The Journey from Platform Nine and Three-Quarters
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