@Robomorons  
She seems to be more like the original than the others, which is why I think she was the first one.

@Pinkie Clone  
Hugs closely.  
If you all want to destroy her you’ll have to destroy me too!!

Because I am pretty sure she’ll suffer an emotional breakdown somewhere along the line which will turn her into a killing monster machine.

No! That clone has as much right as us to live…I shall protect pinkie clone…with all my might!

…
 
 
Weeps into a corner, scared
 
I don’t want to go puff ;-;

@Robomorons  
COME AT ME, BRO!

Robomorons, why are you obsessed with killing Pinkie Clone?

@Jack-o-Lantern  
We have two Molestias, two Lunas, and two Twilights. What’s new?

No problem doing that, Gundy!  

(hic) Whats this 2 Pinkies?

guards Pinkie Clone  
If you guys are gonna pull something, you gotta go through me. Good luck~!

=I  
I am not buying it.

@Applejack  
I’m sorry for what they did…whatever a barn is.  

So who do I freeze?

As mentioned before, extremely rapidly repeating and repetitive imagery can induce seizures. For normal GIFS and such this is not the case, but over a certain rate of recurrence it gets exponentially more probable.
 
Wikipedia has a decent article on this: https://en.wikipedia.org/wiki/Seizure_trigger (read the sources linked too, not the unsourced material)

@Pinkie Clone:  
Hey! You ruined our barn raising. :(

@Robomorons  
punches Robo with a tentacle  
KNOCK IT OFF!

@Robomorons  
Would you do that to the real Pinkie? I hope not. This clone is still a pony in every right and should be treated so.
 
Also, I assume she was the first clone so she’s more like the original then the other clones were.

Yes! Don’t run way! It will make it harder to kill you!

@Pinkie Clone  
Wait! Don’t run away!

Oh look, the clone is getting depressed. That means she will want to take revenge and therefore must die.

@Gundlach  
Thank y-  
Sees Applejack  
AW, MEAN PONY  
RUNS AWAY

Try clicking on the vibrate tag. Fun times.

@Pinkie Clone  
I’m sorry. Please don’t cry. ;-;  
hugs