Wednesday night on MSNBC's "The Last Word with Lawrence O'Donnell," Lawrence spoke with Ian Murphy, editor-in-chief of BuffaloBeast.com. Murphy is the prank caller who managed to get on the phone with Wisconsin Governor Scott Walker by pretending to be conservative billionaire David Koch.

According to O'Donnell, in order to reach Governor Walker, Murphy "worked on a voice, worked up a story, and called the office."

When O'Donnell asked if Murphy was scared during the conversation that Walker would realize what was going on, Murphy responded, "No. Just getting on the line with him was a feat in itself...and I think he's just oblivious, generally, so it didn't surprise me."

O'Donnell asked Murphy why he thinks Walker is taking such a firm stance on the collective bargaining issue. "Profit for himself and...people he associates with," answered Murphy.

Governor Walker has publicly responded to the phone call since it occurred.

WATCH (via MSNBC):