Mischief just seems to follow wherever Dennis appears, but it is the product of good intentions, misdirected helpfulness, good-hearted generosity, and, possibly, an overactive thyroid, ... The Merchant of Dennis The Menace.
Quotes about overactive (2 Quotes)
However my parents - both of whom came from impoverished backgrounds and neither of whom had been to college, took the view that my overactive imagination was an amusing quirk that would never pay a mortgage or secure a pension.