I didnt expect the Spanish Inquisition

I didnt expect the Spanish Inquisition is something someone will say in respond to being asked a lot of questions. In history, the Spanish Inquisition involved people being questions over and over again which is where the saying comes from. It is often spoken in a sarcastic tone with the purpose of showing how displeased someone is about all of the questions they are asked, which seem more like an interrogation.