"He cheated!" the girl said.
"That true?" Mom asked.
"'Plead the 5th," the boy said.
"He's a dirty low-down cheat!" the girl said.
Mom said, "Don't speak like – "
"I'll say what I like: 1st Amendment." Bear in mind these two kids are six and four.
"Well," said Mom, "Mrs Walker's phoned to complain – "
"That old witch!" the kids said in unison.
That did it. They were over her knee in no time: a cruel but not unusual punishment.