Common in more clingy teenagers. A boy or girl who just wants a girlfriend/boyfriend so badly that they will date the first remotely attractive person who comes along.
A lot of people don't really look specifically for good personalities or morals, but whether or not it would be fun to make out with them.
When a girl goes to a party and asks "Will anyone make out with me?!" and everyone says no but she keeps persisting, she is desperate.
People who write or look up urban dictionarydefinitions of good things about their name to take their mind off the fact they rank among the scum of the earth.
Example I
"Oh look Sebastian, this UD entry says that I'm handsome and cool."
"Sounds like someone needs to get hit by a bus... Big time."
Example II
"Hey I want to write about how great the name Lenny is!"