You better do not know !? Hi guys, I have a question which arises when I am watching tv-series or speaking to someone in informal conversations. Sometimes I hear something like: "you better do not know" or "you better do not want to know". I knew "it is better if you do not know", however, the short one is very common as well. Can anyone shed light to this question? By the way, if you want to say: "it is better if you do not know" in Spanish, the translation would be: "Es mejor que no lo sepas". Just in case that helps to someone who is learning Spanish. Thanks