Briefly, "the realization that each random passerby is living a life as vivid and complex as your own." Originally from the Dictionary of Obscure Sorrows, which has a lot more beautiful neologism definitions like this you might enjoy.

Is a great guy to fall in love with, he’s loyal and caring!. Everyone needs an Aliber in there life, there very good sexually, great pleasure!!! Aliber’s tend to care and love hard when it comes to relationships and friendships!! They love to be cared and loved every moment. Now don’t fuck with them cuz you will regret it for life!!!!