Hi Matthew We sometimes create "nouns" by hyphenating a phrase. In order to know what "you-know-what" means, however, we would have to have much more context. Rather than discussing your link, I'll give you a context in which the use of "you-know-what" would be pretty typical: Imagine that a young child has been telling his parents how much he would like to have a certain cell phone -- an expensive one with lots of features and functions.
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