A friend who has almost identical taste in sexual partners. Two people are doppelbangers if they share uncanny interest in multiple members of the opposite sex.
John and Tim both likeMary, Angela, and Kim. They have such similar taste they must be doppelbanger s.
DoppelGangster: A combination of the words "doppelganger," meaning "ghostly evil mirror image"
and "gangster," meaning proffessional criminal member of a family or group.
Combined the words mean "Criminally Evil Mirror Image."
Used in sentance: "I might have to do work tonight, I'm going to bring my DoppelGanster."
Or: "If you contiue to mistake kindness for weekness you will meet the DoppelGangster."
This can also refer to a friend that has a more street-oriented style than you:
"My Friend JC may resemble me, but he it's more like having my DoppelGangster around."