The Buffalo Grove Police Department said the man stopped at the station Jan. 5 and asked an officer to help explain the dangers of hitting someone and pulling their hair while they are driving a car, the Pioneer Press reported Tuesday.
The girls told the officer they "shoved" their dad because they wanted him to stop singing.
The officer wrote in a police report that the 9-year-olds "understood" the lesson.
"The complainant was satisfied with the results," the Glenview-area newspaper said.
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