The BIGGEST idiot on the face of the planet.
He's a very egotistical, narcissistic, conceited fool who's obscenely large ego derives from low self esteem. He'll also even create his own definition of himself to prove it. Has to beg his ex-girlfriend to get back together with him so he doesn't feel lonely.
"Man! i know this guy names Shawn! He acts like he's the best when he's not! I think he calls himself IrishSteele"
12 step recovery jargon referring to someone new who talks about how great life is, now that they'resober. Usually meaning that the person is out of touch with reality.
The new guy seems pretty happy for a dude who has no job, no money and no family. He must be on a pink cloud.