A smiley to pretend to be a sophisticated and "special" internet users. Mostly used by older (but worse) internet users trying to be special.
An indirect way to say "kill me,
please", and under death penalty by international law, one of a couple of exceptions of human rights activists,
anti-
suicide workers, and any country except Isis-related religious trolls (such as all isis founders, leaders, followers, and most regular trolls).