Bill Cosby allegedly said he was hit in the face with a stale hot dog bun and fell down stairs on his first day in prison, according to reports.

Radar Online says a Montgomery County courthouse source overheard a phone call made via speakerphone by Cosby to his wife Camille shortly after he was sentenced to up to 10 years for sexual assault.

"He said he had a stale hotdog bun thrown at him and he fell down a few steps because he wasn't being guided," the source reportedly told Radar Online.

At 81 years old and legally blind, Cosby is in the minority in the Pennsylvania prison population.

The gossip website also claimed Cosby told his wife, to "grab the chequebook" and hire "anyone and everyone" who could facilitate his release from prison.

Andrew Wyatt, a publicist for the disgraced comedian, paints a different picture, however. He told TMZ Cosby was being treated "very well".

"He said, first off, people were amazed to meet him and see him, and they're just treating him very nicely," Wyatt said in the interview.

"He said they're very respectful to him."

Following Cosby's sentencing hearing, Wyatt told media his client had been subjected to "the most racist and sexist trial in the history of the United States".

"They persecuted Jesus and look what happened," he added, according to CNN.

"Not saying Mr Cosby is Jesus, but we know what this country has done to black men for centuries."

Notorious former NFL star OJ Simpson also weighed in on Cosby's incarceration, telling TMZ: "I think they should've let him do his time under house arrest."

Simpson said Cosby would need protective custody during his sentence.

"The problem is the nature of the crime," he said.

"Rapists are frowned upon in prison."

Simpson was acquitted of the murder of his ex-wife Nicole Brown Simpson and her friend Ron Goldman after a lengthy trial in the 90s. He later spent nine years behind bars for armed robbery and kidnapping, before being released last year.

Newshub.