I like this phrase introduced by Alberto. And indeed it's an adverbial colloquial speech expression and something vulgar which reiterates denial with some recrimination and following another previous denial, that is inserted by " ". Something similar happens with the locutions "... or dead child or... or what eight quarters " that you emphasize the rejection of a purported explanation or justification.
* Only one "like" per meaning and day, the more "likes" the meaning will appear higher in the list
