PHOTO: Gerald Sandusky

In an exclusive interview with ABC News, the mother of the victim that set off the investigation into Jerry Sandusky’s alleged child sexual assault has said that she is disgusted and outraged by the former Penn State coach’s claims that he was merely “horsing around” with the boys.

The boy’s mother, who explained how she learned about her son’s alleged assaults at the hands of Sandusky in an interview last week with “Good Morning America,” said that the former coach coming forward to brush off the alleged child rapes will not help his case.

“It sickened me, that he would be on TV, trying to downplay his charges. And I think it made him look more guilty,” the victim’s mother said.

Sandusky surprised many Monday night when he phoned in to an exclusive interview with NBC’s Bob Costas. In the interview he denied all of the 40 charges of child sexual assault that have been leveled against him, and said that he is not sexually attracted to young boys.

“I could say that I have done some of those things,” Sandusky said. “I have horsed around with kids. I have showered after workouts. I have hugged them and I have touched their legs without intent of sexual contact.

“Am I sexually attracted to underage boys? Sexually attracted, no — I enjoy young people, I love to be around them … but no, I am not sexually attracted to young boys,” Sandusky replied to Costas.

Find out more of what the victim’s mother had to say about Sandusky’s interview on “Good Morning” Wednesday at 7 a.m. ET.