From Jill jillsjewishhumor@opt-in4email.com, this was posted on the groaners listserv. The author is not known.

There were two Jewish women, Ruth and Golda, walking along the street,and Ruth says to Golda, “My son, Irving, is finally getting married. He tells me he is engaged to a wonderful girl, but… he thinks she may have a disease called herpes.”

Golda says to Ruth, “Do you have any idea what this herpes is, and can he catch it?”

Ruth answers, “No, but I am just so thrilled to hear about Irving’s engagement It’s past time he’s settled As far as the herpes goes… who knows?”

“Well,” Golda says, “I have a very fine medical dictionary at home. I’ll look it up and call you.”

So, Golda goes home, looks it up, and calls Ruth. “Ruth, keinahurra (thank goodness!), I found it. Not to worry! It says herpes is a disease of the gentiles!”