"Andru" is a term used to describe a down bad person, usually a romance anime addict, that does not deserve respect and should not be treated and counted as a normal person, being a highly derogatory word, only to be used in extreme cases of hate and anger.
It is mostly used in Romania, Bucharest, Sector 4/2 (Berceni and Tei)
-Look at him, he is such an Andru !
-Image stealing money from small children to buy drugs and a Crunchyroll subscription!