Apparently it’s pretending to be an asshole:
First, it's remarkable Ian Murphy, pretending to be Koch, even got through. He talked to Walker's chief of staff, Keith Gilkes, and said he couldn't leave a return number because, "My goddamn maid, Maria, put my phone in the washer. I'd have her deported, but she works for next to nothing." This, oddly enough, led Gilkes to invite "Koch" to call back and speak directly to the governor.
Oh my God. I’ve totally been doing it wrong all these years.
More ..... here. Un freaking believable.