Hypocrisy is a form of speech commonly used in the Dededeiverse, in which someone says something that another person does is wrong, commonly to establish that they are above someone, but in reality they do that exact same thing. What often follows is a sarcastic remark from someone about the hypocrisy, to which the one in question proceeds to deny it, ignore it, or brush it off ad claim it wasn't anything major.

Depending on if you think anything I've ever said counts as hypocrisy, this article may or may not, also be, hypocrisy.