What Is a Dickover?

John Gruber:

It’s a goddamn privilege for anyone to bestow your article, story, or product page with their attention. The gall, to deliberately interrupt them while they are in the middle of actively reading, to present them with a dickover. It is no different from snatching a physical copy of a book or magazine out of a reader’s hands in order to badger them for something other than the attention they were already granting your work, except that the physical act of snatching a publication from a reader’s hands would subject you to being punched in the face.