There's a guy at my work who's been there same time as me - a little over a year, which makes us still kind of new, but we're well-established regulars now.
Anyway, he's good at the job and has no trouble, but he actually used to work for the police as a civilian researcher for a unit that worked Credit Card fraud, so this is kind of easy shit for him. He was working hard behind the scenes to get another cop-helper job and he did alright on that front, because after umpty-ump background checks, he landed another one.
Now, his new job will start in June or maybe July, so he's still with us for now, but in the meantime he's basically been trolling management out of sheer boredom. He'll go out and FIND fraud - double the expected monthly totals, as a matter of fact - and cancel the accounts, but that's it. He's come in hours and hours late to see if anyone would notice, he spent a month and a half not putting any of his "kills" in the database (so it looked like he was actually doing no work at all), ignored his phone blocks, whatever. Each time he was caught, he'd play dumb, fix up his "mistake" and find something new to break and they'd add a new item to this list of stuff they were scrutinizing about him. It was pretty funny.
I had to laugh though. Management found the best revenge. Not realizing he's already got a line out, they assumed he's some ADD-riddled wall-bouncer (As bored as he is, I don't think he has ADD, he's very laid back and focused) who needs to be given more complex tasks to "stimulate him", so now they're giving him these huge, complicated, time-sinking jobs to do as if he was a human Jack Russel Terrier. Of course now he has all this awful drudge work to do which will take hours and hours and hours, so the joke's back on him.
I can't say he's being a complete sport about it (he mostly is), but he sees the humour in it at least.