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A term used to describe when a mass amount of people (or one person using multiple accounts) have down-voted a post, reply, comment, blog, video (etc) in a short amount of time, with the result most often leading to dislikes winning over likes by a landslide.
Troll: This video SUCKS! I'm going to burn your house down and violate your sisters!

Anonymous Person #'s 1-40: *clicks the dislike button*

Poster: I have never seen a comment get disliked to -40 before. It truly got dislike-bombed.
by Knowledgeable Monkey December 27, 2013