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1.
Someone who constantly touts the superiority of his iPhone, specifically when no one asks.
Q: "Why did you stop hanging out with Todd?"
A: "He's a total iPhag and I got tired of hearing him give head to his phone."
by Lipnicki July 22, 2008
 
2.
Someone who owns and obsesses over his or her iPhone; esp. Apple fan-boys/girls.
Look at that iPhag, updating his iPhone with iTunes on his MacBook while listening to his iPod and screwing with his iPad. I bet if he had friends they would be really bored right now.
by Sarcen September 20, 2010
 
3.
One who is browsing the web on their iPhone while located 10 feet or less from a computer.

Dude, I totally busted Jeremy looking at myspace on his iPhone when he was sitting at his work computer. He's such an iPhag.
by Nate Piller January 18, 2008
 
4.
An over-the-top, devoted Apple fan who can't stop parroting the latest Steve Jobs marketing pitch.

Someone who is always the first to shell out big bucks for the newest Apple product. May camp out overnight to purchase the product. Always ends up a guinea pig sorting through the early release bugs and never admits there's issues.

More generally, any person whose entire social life is based in cyberspace. I.E. hardcore Facebook, Twitter, Myspace, Warcraft, Sims, etc users and most bloggers.
Look at those stupid iPhags sleeping in tents in the Best Buy parking lot for an iPad!! How's that Apple cock taste?

That guy plays Warcraft 10 hours a day, claims to have 50,000 friends on Facebook, and never leaves the house except to get the mail. What an iPhag!
by HHMTB June 13, 2010