Andarse con Rodeos / Salirse por la Tangente
You beat around the bush when you avoid answering questions that people ask you or when you go around an issue that you do not want to talk about. A contrary expression is “To go to the point”.
In the 1500’s, hunters hired people to beat around the bushes. These people were called beaters. The purpose of beating around the bush was that animals that were hiding inside could go out so that the hunters could shoot at them in the open. The beaters didn’t beat directly on the bush because they found it more effective if they beat around.