used when talking about people who believe in conspiracy theories (= the belief that events or situations are the result of secret plans by powerful people), especially to refer to something that protects them from these secret plans

Let's take off our tinfoil hats for a minute. Do you seriously believe that NASA would be hiding something like that? 让我们暂时把锡箔帽摘下来试试。你真的相信美国宇航局会隐瞒这样的事情吗？

The tinfoil hat types are really only wrong in that they think we are watching them specifically. 那些执着于阴谋论的人，其实只是错在认为我们在专门监视他们。