Doppelganger Porno 

A porn video or movie that features someone that looks a lot like, but isn't, somebody you know, doing the nasty. A few times in his life, a man will stumble across one or two of these.

"Wow, that hot chick banging that guy on screen sure looks a lot like my hot friend that i'll never have sex with. AWESOME! Looks like I found a doppelganger porno!"

Doppelganger Porno by Mahogony Fog May 24, 2010

Doppelganger Theory 

A theory stating the idea of overlapping looks... Billions of people in the world with millions of different appearances...meaning, there are at least 1,000 people in the world who look identical to you!

Freddy: OMG! I just came back from California and I saw someone who looks JUST LIKE YOU!

Vinnie: SEE, I told you! Fuckin Doppelganger Theory is REAL!!

Doppelganger Theory by TheUltimateGayMan June 28, 2010

doppelgänger bonanza

A doppelgänger bonanza is an specific act of sexual intercourse where two people of similar stature switch without the other participant being aware of it . This is done in a dark room to avoid suspicion of changing partners.

Usage: Brandon Blew it in her thus leaving a mess for the doppelgänger bonanza

doppelgänger bonanza by FLT1335 June 26, 2016

Doppelganger effect

A causality exists in which after spending enough time with your best friend you start to dress, look, act, and eventually think the same as each other.

“Notice how those two guys sitting together on the bus have the same sunglasses, rings, haircuts, phone brand, shoes, etc. That’s the doppelganger effect. And look in the seats behind them are two girls who dress, tilt their heads and even laugh exactly like each other too”

Doppelganger effect by mogydee May 26, 2020

Doppelganger Hanger 

someone who still keeps a picture of a popular person (actor, athlete, artist, etc) of which they were told they look-alike (or not) as their primary pic in their web profile, 3 weeks or more past Doppelganger Week.

Dude1: "I met this girl online who looks like Beyonce, but when we met in person after 2 weeks of chattung, Dude, I didn't see any trace of Beyonce in her, I don't get it."

Dude2: "Dude, haven't you heard of the Doppelganger Hangers !? They're rampant now. I learned my lesson this week after meeting somebody parading as Jodie Foster online. Just be careful from now on."

Doppelganger Hanger by CJ_dBabe February 9, 2010

Doppelgänger effect 

When you attracted to someone because they closely resemble your ex

I'm not sure if I'm into gingers now, or if it's a just the doppelgänger effect.

Doppelgänger effect by Jpinn March 29, 2016

doppelganger jack 

the funniest character in all of borderlands the pre sequel, matched only by his raw might and his desire to go home and not be shot at on the moon (stupid student loans)

Jake: i like FR4g-TR4P
Ryan: shut the fuck up i will fucking laser you with laser eyes
Robert: PaPas gonna shit himself and doppelganger jack is good

doppelganger jack by Apieceofchewedgum June 3, 2018