SHOCK AUDIO: Laughing Drew Peterson Calls Into Mancow Radio Show

Drew Peterson just sunk to a new low.

The infamous former Illinois police sergeant --accused of drowning his third wife Kathleen Savio --called into Mancow's radio show in Chicago Wednesday and  through much of the interview, joked about being behind bars.

Peterson called the show collect from the jail in Joliet, saying "Yeah, what's up."

Mancow asked Peterson about his love life behind bars.  Peterson -- laughing -- said:  "I've got alot of buddies who are anxious to wash my back in the showers."

He  also the guards were treating him well and called them  "professional."

For one moment, the interview turned serious when Peterson talked about being kept in isolation .  He called it "lonely" and said he does gets to watch television and read a book every now and then,  but that's it.

The serious moment proved fleeting as Mancow said that Peterson's attorneys said that he would be doing a comedy routine for them.  Peterson then lauched into a series of so-called jokes.

When Mancow asked how he could be joking, Peterson said he uses humor to deal with being in jail.  He also said he reads the Bible and prays all the time.

Peterson is being held on a $20 million dollar bail.  In addition to being charged with first degree murder, he is also considered a suspect in the disappearance of his fourth wife Stacy, who vanished in 2007.

(Photo: Zuma Press)