"He talked to him about it, same story," Petrosky said. "He said he was sucking on his (penis), is what he said. We thought he was going to have a heart attack. We kept people with him all night to make sure he was all right. It was hard to concentrate after that."
The accounts of Witherite and Petrosky constitute the alleged assault against Victim 8 as described in the grand jury presentment, one of 10 alleged victims that the state attorney general's office used to arrest and charge Sandusky with 52 counts of sexual abuse. The attorney general's office have not been able to identify Victim 8.
The shower assaults echo the testimony of earlier accusers, who have said Sandusky would bear hug them naked in the Penn State showers, start soap fights in order to begin touching them, and then grope them and try and rape them.
The accounts also corroborate the testimony of witness Mike McQueary, a Penn State assistant football coach who says he saw Sandusky raping a boy in the showers in 2001.
Sandusky is charged with 52 counts of sex abuse stemming from 10 alleged victims. Sandusky, 68, could be sentenced to life in prison if convicted of the charges.
Earlier today, a man identified by ABC News only as Victim 7 said today that Sandusky touched him inappropriately while riding in his car, showering on the Penn State campus, and sleeping over at Sandusky's house from 1996 to 1999.
He said Sandusky would often insist on showers, even if the boy said they weren't sweaty and didn't need to shower.
"I remember him trying to shampoo my hair, shampoo my back and shoulders, at which point I tried to slide down another shower to get away," the man said. "When he did the bear hug in the shower, I don't remember him saying anything, just sort of grunting."
Victim 7 met Sandusky the same way the other accusers who have testified said they met Sandusky: through the Second Mile, the charity for troubled boys that Sandusky started.
The witness was around 9, 10, or 11 when Sandusky began picking him up to go play sports or do activities, occasionally taking the boy back to his home for sleepovers or finishing workouts with a shower in the Penn State locker rooms.
It was in those two locations that Sandusky wrapped himself around the boy in a bear hug, either lying down in bed or in the shower, where he would lift him up, rubbing his front-side against the boy's backside, Victim 7 testified.
"To this day I'm still repulsed by chest hair. I remember it pressed up against my back. For whatever reason it just made me hate it. I just have this thing now where I just hate chest hair," he said.
He said on one occasion Sandusky shoved his hand down his shorts and fondled his penis while they were driving together.
Victim 7 said he never told his parents or anyone else about the showering or cuddling in bed because he felt embarrassed.
"I was kind of ashamed about it. I didn't want anybody to know," he said. "I knew it didn't feel right. It felt like something they would get mad about. I wanted to go to games, so I had chosen to block that stuff out and focus on positives."
Defense attorney Joseph Amendola got Victim 7 to admit that some details of his account were different from what he told a grand jury, and that the details changed after he spoke to the prosecution and hired a civil lawyer.
During his grand jury testimony Victim 7 said that Sandusky never fondled him or kissed him.