When the going gets tough, the tough eat ice cream. They also keep their sense of humor because laughter is the best medicine in a world gone mad. In this, his seventh book, nationally syndicated humorist Jerry Zezima writes about family foibles and the funny little things of everyday life. It’s the kind of stuff that millions of people can relate to. And it’s a welcome respite from all the bad things going on these days. So sit back with “The Good Humor Man,” open a carton of ice cream, grab a spoon, and dig in. And don’t forget the rainbow sprinkles.