Something a little better in functionality than what happens to be the most popular form of the thing in question.
Comes from the fact that a puffin is a black and white bird adapted for both swimming and flying, whereas a penguin is also a black and white bird but is only adapted for swimming, and yet is far more popular than a puffin is.
The state of something being puffiny is always up for debate however.
The Playmates: "Come on Holly, lets go skinny dipping!"
Holly: "No, I want to go home and be with Puffin."
Kendra: "Oh Holly, just have a quick orgy and go home."
Holly: "Okay!"
Guy 1: dang bruh what are you doing rn
Guy 2: Just putting a leash on my bitch (Puffin) and taking her for a walk Guy 1: goddamn dawg thats kinda hot
Guy 2: very pog!