oi guys...do u know what "doppleganger hijinks ensued" mean?

"Doppelganger" is German for "double walker" - a shadow self that is thought to accompany every person. Traditionally, it is said that only the owner of the doppelganger can see this phantom self,before his Death

another concept is that everyone has a doppleganger, an identical copy of themselves somewhere in the world. If the person is good then the doppleganger will be evil and vice versa. It is even said that if the two should meet then they will both perish.

many people reported that they have seen their Doppelganger, like Abraham lincoln before his Death,
Charlie Chaplin once went to a Charlie Chaplin-look-alike competition. Chaplin didn't even make it to the finals.
queen Elizabeth I met with the shadow of her own before she died.
and many others ,all i know is that meeting your doppleganger is a bad sign ,in all the theories


In the show, Elena is Katherine doppleganger, they both look very similar but with completely different personality which goes with the segundo theory.

I think "doppelganger" means the double identity...cause katherine looks like elena..