What Was That Again

What was that again??

A week after their marriage, the newlyweds paid a visit to their doctor.
"I can't figure it out Doc, my testicles are turning blue."

The doctor examined him and confirmed the unusual condition. He asked the
wife, "Are you using the diaphragm I prescribed?"

"Yes." she replied.

"And what kind of jelly are you using?" the doctor then asked.

"Grape." she said.