DEPOSITION REDUX: Prosecutors introduced more of his lurid testimony from a decade ago, when he said he gave quaaludes, a highly popular party drug in the 1970s that was banned in the US, to women before sex. The defense will begin presenting its side Monday.
Defense attorney Brian McMonagle said no one asked Cosby to bring the pills to the 2005 interview, he voluntarily provided pills and that he had no obligation to talk to anyone.
A handful of protesters have at times stood outside the courthouse, yelling "guilty" as Cosby walked by.
Cosby is charged with drugging and sexually assaulting Andrea Constand, a former administrator at Cosby's alma mater, Temple University, at his Philadelphia-area home in 2004. He says the sexual encounter with Andrea Constand was consensual. Prosecutors have suggested he gave her something stronger - perhaps quaaludes, a highly popular party drug in the 1970s that was banned in the U.S.in 1982.
Prosecutors evidently saved the quaalude testimony for maximum effect.
Bill Cosby's reputation and his screen persona as the lovable patriarch of America's favourite television family parted company long ago - and if the star of The Cosby Show had any hope of rehabilitation after 60 women accused him of sexual assault, the details revealed in court this week have made it far harder.
Shortly, forensic toxicologist Rohrig took the witness stand and stated that Benadryl could have similar effects of Quaaludes.
Constand, 44, testified this week that Cosby penetrated her with his fingers against her will after giving her pills that left her paralyzed, unable to tell him to stop.
The celebrity's private security staff hustled the 79-year-old comedian to his waiting SUV but spokesman Andrew Wyatt remained behind to address a question on many minds after the fifth day of testimony wrapped up.
On Friday afternoon, the jury heard final excerpts from the comedian's 2005 and 2006 deposition taken as part of a civil lawsuit Constand had filed against Cosby.
Portions of the deposition became public almost two years ago and played a major role in prosecutors' decision to charge him.
On Wednesday, in the midst of testimony from the main accuser, Andrea Constand, Cosby was walking down a hallway when a court officer spotted someone using a cell phone.
"I apologized to this woman", Cosby said, according to the deposition. "But my apology was, 'My God, I'm in trouble with these people because this is an old man and their young daughter and the mother sees this", The Hollywood Reporter quoted him.
One moment in that decade-old testimony elicited a chuckle from jurors and a rare courtroom smile from the defendant - a question and answer about the now-deceased doctor who wrote the Quaaludes prescription, knowing full well Cosby didn't intend to take the pills himself. He didn't wish to be perceived negatively by the public if he'd given Andrea any other drug or had sexual contact with her while she was unconscious. He read the depositions, in which Cosby admitted to using Quaaludes - a sedative that can induce sleep - to have sex with women.
Cosby also recounted offering to pay for graduate school for Constand. Constand refused the offer and reported Cosby to police, suing him after prosecutors failed to file charges.
Valliere has spent over 30 years treating hundreds and even thousands of people impacted by sexual assault, both victims and offenders.
Veronique Valliere, a psychologist and expert on victim response to sexual assault, testified for prosecutors that there are numerous reasons why sex assault victims delay reporting, including embarrassment or a fear of being judged. There's still a chance Cosby could testify at the trial.
McMonagle went on to demand that Montgomery County Judge Steven O'Neill declare a mistrial based on the nature of the expert witness' testimony.