A person whose instagram and other social media photo galleries are filled with selfies - even including the full body mirror reflection ones. The annoying self absorbed people who chronicalize every mundane detail of their lives by posting selfies.
Simply stated, it is an individual that is so consumed with their own selves that they become oblivious to, nor do they care how their actions or words impact others.
Confidence and self-absorption rooted in narcissism are not the same: first, narcissism is self-focused while confidence considers the wellbeing of others.