Thread Crapper

A Thread Crapper is someone who feels the need to spread their disdain for a topic on a message board, while adding nothing constructive to the conversation.

(Member 1) posts a message on an art website for members to discuss their favorite works of Van Gogh.

(Member 2) Replies that they are fond of "Starry Night" and gives the reasons that they enjoy this painting.

(Member 3) says they are partial to "Wheat Field with Crows" and discusses the merits of the painting.

(Member 4) says they hate Van Gogh because they think he's stupid. <---Thread Crapper