People on facebook who like to offer their views on various topics, often atempting to reveal deep truths about humanity but nonetheless appearing vacuous and unoriginal.
Person B, attempting to be a faceolosopher, comments on Person A's comment by stating "We often point out in others what we despise in ourselves," or something equally meaningless.
People who consistantly post ass-kissing or overly complimentary comments to another person on facebook, almost exclusively in response to a facebragging
status post, so that the other person can get confirmation of how wonderful their life is, etc.
Person A posts a facebrag
status update with pictures of their children or what their children did that day, which in turn motivates a multitude of sycofacer or faceophant or facesucker posts of ass-kissing suck up comments to person A. Often done by person A to elicit such responses in the first place, and a form of facebragging