Funny.

This is a conversation between Richard Pryor's gf and her Dr at the time.

"He said, "Pam, I want to tell you about an epidemic that's prevalent in Beverly Hills right now. It's a buildup of cocaine residue around the cervix and in the vagina. You have it. Are you doing drugs?"

"No," I said, astonished.

"Well, it's really dangerous," he went on. "Is your partner putting cocaine on his penis to sustain his erection?"

"No," I said, "not that I know of. It's not like he has a pile of cocaine next to the bed and he dips his penis in it before we have sex." I had a nauseating flash of one of Richard's famous lines: Even my dick has a cocaine jones.

"Are you sure he isn't doing it in the bathroom before he comes to bed?" the doctor asked.

"That's a possibility," I said. "You know, I am dating Richard Pryor."

"Oh, my God," he said. "We have a serious problem here. If he's not putting it on his skin directly, then it's worse because the coke is in his seminal fluid."

The doctor then asks her if her mouth went numb while performing oral sex on Pryor, which she says it did, and which he links to the Novocaine-like effects of cocaine."
Quote from Dlisted.com thanks(T)for the top pic.