1.Person who goes to www.urbandictionary.com to define their first name as cool, awesome, a lady killer, or sexy. But is actually perpetually trying to overcompensate for insecurity issues.
2.dumbass; one who practices the craft of dumbassery.
3.One who describes ones self as original or as an individual, though is a blatant conformist.
A way of making fun of one's self or another for saying something obvious or really stupid....in place of saying Doh, Duh, or Der. It just sounds funnier.
Someone who lacks self-awareness about their level of non-conforming interest, passion, or expertise of a subject.
Also: Someone who lacks general self-awareness, hygiene, or sensibility and who simultaneously holds an aberrant level of interest in a subject, often an intellectual or introverted subject. It is a portmanteau of dweeb and nerd.