When I was a lad, I very much enjoyed the comedy of Cheech & Chong. Tonight, at the Novo by Microsoft theatre in downtown Los Angeles, I got to see them live. Their humor comes from a gentler, and now rather distant, time in our nation’s history, but only one of the many bits actually felt dated. Amid the drug-related and social-observation material came a genuine political surprise. An anti-Trump joke in the opening act fell a little flat, and a few minutes later, when the main act got under way, Cheech asked the audience, “Are there any Donald Trump...