This is certainly much less a misquote than a misappropriation; when the second line is excluded through the quotation this means “the winter of our discontent is occurring now,” but once we include the next line, the correct meaning of your quotation is “the Winter season of our discontent http://donovanuslew.59bloggers.com/4442412/5-simple-statements-about-shakespeare-doth-protest-too-much-explained