Judgewagon 

(Noun) The result of a group of people simultaneously judging the action of someone in the group who has just done something foolish, a portmanteau of "judge" and "bandwagon" and used in speech in a similar way to the term "strugglebus". Refers to the bandwagon mentality of a judgmental clique.

Sarah got so drunk one night that she attempted to sing "Livin' On a Prayer" but could not hit any of the notes, and her friends spent the entire night on the judgewagon against her.

Judgewagon by Romantide May 14, 2013