Berta takes off work for a few days to attend her family reunion and lines up a replacement, Esmeralda. When Esmeralda turns out to be a much better worker than Berta, Charlie and Alan don't want to let Esmeralda go. Meanwhile, Lyndsey decides she doesn't want to get back together with her ex-husband, Chris, and hooks up with Alan again. Then, Alan fears an angry Chris is stalking, threatening, and planning to kill him. Title quotation from: Charlie, explaining that it's useful to know how to say "I love you" in several different languages if you ever want to "have a good time" in Central Africa.