Arguably the most extreme manifestation of acute anxiety, a panic attack is an episode of sudden apprehension and intensefear, combined with physiological symptoms that closely resemble a heart attack.
A panic attack is the most frightening experience one can ever experience; I wouldn't wish it on my worst enemy.
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.