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1.
An adjective used to describe a male that insists on putting a definition of their name on Urban Dictionary that includes having a large penis and/or being attractive.

These men often post the definition on facebook and other social networking sites in order to mislead people into thinking that they are desirable even though they aren't.

This is a red flag indicating a guy is ugly, has a small penis, or both.
James' Facebook status:

James: Someone who is un usually well hung. People with the name James are generally known for their good looks (especially the eyes) and women are just simply attracted to them.

Me: One look at this troll's pictures and anyone can see this guy is urbinsecure.
by PartyMonsterT March 30, 2010