A crazy, nasty-ass follower of the Huffle Badger on Tumblr. Pufflings are recognizable by their inability to give one single shit, their badass smiles, and their particular inclination towards finding shit.
Pottermore User #1: I've been trying to annoy that Hufflepuff for HOURS, but they just don't seem to give a shit!
Pottermore User#2: Dude, that's a fucking puffling. You think Huffle Badger's pufflings give a shit? Hell no!
Term derived from slang. Normally used in England. I mean you'd sound like a bit of a nob if you used this in America or something.
Anyway, basically it translates to "What's up? You're extremely attractive" It is now mostly used by teenagers who are wannabe gangsters (like I stated earlier) or a group of guys saying it as a joke.