When is it okay to correct someone’s grammar? A listener from Madison, Wisconsin, says a friend went for a parent-teacher conference only to notice that a sign in the classroom read “Things your thankful for.” Should the teacher be called out? Is...
A listener says his sister reprimanded him for using the term “rule of thumb.” She says the expression derives from an old British law that allowed a man to beat his wife with a stick, as long as it’s no wider than his thumb. Is that story true...

