Endorfiend 

A person who deals with a lack of opiates in their system by prolonged exercise to release endorphines into the system to feel better.

I was feeling horrible until I took some kratom and jogged for 15 miles up some hills, I'm such an endorfiend.

Endorfiend by Delphikow January 2, 2017

Endorien 

the guy who is muscular slim with the perfect body he has a big cock and and all the girls want him he is known for one night stands and he is the type of guy who is loving sweet caring kind and he is a likeable dirt minded boy that everyone adore

Endorien is...
Endorien has...
endorien was...

Endorien by Endorien January 13, 2020

Endorfinition 

A word, or sequence of words which define Endorphous’s world. These words are multiplying in number by the day, hailing a new era and style of keeping the legend of Endorphous going.

For excellent award winning examples of Endorfinitions see:

Steam Dream Beam Cream
Dook
Duckdow
cracraplucla
Durvey
Ducks and Sings
No Nosed Meeting
Arapnestry

Endorfinition by mfseed October 9, 2010

endorfins 

Da brain-chemicals dat you produce when ya see da classic shark-appendage in da water.

Da infamous "blonde sees what she thinks are dolphins" Vonage ad indicates dat said ditzy tow-head didn't have an overly-abundant supply of endorfins in her brain!

endorfins by QuacksO April 23, 2023