Comment Murderer

One who comments on a facebook status with a random word, or stupid joke that no one understands or everyone hates, therefore causing other people the sudden urge not to comment on it. Usually this person is not liked by anyone on facebook, and in most cases real life.

Also see comment murder

Person 1 (Joe just posted "asdfhsadf" on my status.)

Person 2 (Wow he's such a friggen comment murderer)