a tool used by some hateful mexican americans to keep blacks and whites divided so that they can slowly creep into the american power structure and reclaim their lands. generally fluent in cockblockese.
mexican americans can be some of the biggest racist cockblockers you have ever seen if you are black. not that i have anything against them, but just look at those haters standing over your shoulder...
A person or group of persons who casts "thumbs down" on an entire library of an individual Urban Dictionary author's definitions because they disagree with one of said author's definitions/opinions. Contrarians love to play red light/green light.
Sasha told all of her friends to thumbs down anything by Marcus. What a contrarian.