Riddle Me This

Sometimes Bossdad leaves The Argyle Sweater day calendar entries taped to my computer screen which is always a welcomed surprise (one of the few types of surprises I actually like). He really knows how to find the right joke that will appeal to my humor and then shares it with me. After I laugh I always flip it over because there is either a silly known fact or puzzle on the back of it, a little added bonus of fun. Today it is a riddle. I'm not very good at them since obviously my answer to the riddle in question is inappropriate:

He who has it doesn't tell it. He who takes it doesn't know it. He who knows it doesn't want it. What is it?

Why does "herpes" come to mind first?



Counterfeit money.

Herpes seems like a better choice doesn't it?