Last week on Last Week Tonight with John Oliver, the host, returning from virus-dictated hiatus to present his HBO show from his own home, ended the program by sharing his discovery of footage from a vintage local public TV fundraising auction. Very vintage, as in 1992, and very local, as in York, PA. A local artist, Brian Swords, had several works up for bid, and Oliver was fascinated by them, because one series of paintings depicted human-like rats in amorous embraces. One painting,