Doppelbanger 

An exact double of ones self who bangs ( has sex with ) people who are not their significant other.

Exampl #1
Wife: " I saw you F@*king Karen last night"
Husband: " Baby, that wasn't me, it must have been my Doppelbanger."
Example #2 " Dude I swear I saw my girl blowing some guy in that corvette, nah must be her doppelbanger"

Doppelbanger by Awhellyea April 19, 2010

Doppelbanger 

Who you blame when caught cheating on your spouse/significant other.

Honey, I'd never cheat on you. It must have been my doppelbanger.

Doppelbanger by smithering27 July 27, 2010

doppelbanger 

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 like Mary, Angela, and Kim. They have such similar taste they must be doppelbanger s.

doppelbanger by grimymonkey May 28, 2013

doppelbanger 

realizing after the fact that you've just had sex with someone you'd slept with before... a sexual doppelganger

Samantha on Sex & the City once said to a man, mid-fuck, "Wait, a minute... I've fucked you before!"

That's a doppelbanger.

doppelbanger by Lisa January 30, 2004

doppelbanger 

That sneaky dude who go out and has sex with ugly people while you're busy drinking too much alcohol with your friends.

Naw man, it must have been my doppelbanger again.

doppelbanger by dudebrahace October 22, 2010

doppelbanger 

the real definition of this word is the act of double penetration, or one who performs this act.

Let's buy some condoms & visit Lu Lu she's a doppelbanger

doppelbanger by Pablonola December 12, 2010

doppelbanger 

A look-a-like of somebody that you used to date (or have sex with). Similar to the original meaning of "doppelganger" - known as a strangely similar counterpart of someone.

"Dude! Is that your ex girlfriend?" "Nah, just a doppelbanger of her"

doppelbanger by CJ Moose February 27, 2015