It's used in the twenty one pilots fandom and stands for the Few, the Proud and the Emotional. FPE is mentioned in the song Fairly Local (from Blurryface):
"Yo, this song will never be on the radio
Even if my clique were to pick and the people were to vote
It’s the few, the proud, and the emotional
Yo, you, bulletproof in black like a funeral
The world around us is burning but we’re so cold
It’s the few, the proud, and the emotional"

Solarpunk is a movement focused on a positive, ecological vision for a future where technology is used for human-centric and ecocentric purposes. It is a literary, artistic and aesthetic sub-genre and is also closely tied to eco-political activism. Solarpunk narratives have a distinctly positive and utopian foundation in contrast to the often dystopian visions found within other "punk" science fiction genres.

Failed perimeter escape

Found on the CD case for twenty one pilots' recent album: Trench

Previously believed to be 'the few the proud and the emotional'

Stands for “The Few, the Proud and the Emotional”. Used in the Twenty One Pilots fandom, also known as the Skeleton Clique. Originally comes from the Twenty One Pilots song Fairly local (Blurry face album). Later on, in the album Trench, is given a new meaning of “Failed Perimeter escape” to tie into the Dema storyline created by the band.

It's used in the twenty one pilots fandom and stands for the Few, the Proud and the Emotional. FPE is mentioned in the song Fairly Local (from Blurryface):

"Yo, this song will never be on the radio

Even if my clique were to pick and the people were to vote

It’s the few, the proud, and the emotional

Yo, you, bulletproof in black like a funeral

The world around us is burning but we’re so cold

It’s the few, the proud, and the emotional"

hey, we're FPE

Fat Pussy Energy

FPE “Fat pussy Energy” The state of being Superior to all.

Similar to BDE or “Big Dick Energy”.