The act of viewing someone else's half-assmanship and finding oneself so moved to comment upon the splendidness of the half-assmanship that one must utter an exclamation.
Employee: Holy shit! Would you look at that half-assery! That'sdedication!
Someone who actively decides to do less than their best because either they don't care or they feel the task doesn't deserve the time it would take to do a good job.
"Joe, are you going to put much time into your progress report?"
"Naw, I'm gonna half-ass it, cause nobody will EVER read it anyways".
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.