I think what your wife is saying is that she wants to convince you that she wants a threesome with you and an ophthalmologist. She wants to bring him into the bedroom, and then handcuff you to a chair, and oh no! You can't do anything from the chair but watch! Now he's spreading peanut butter on her eye while you lick it off, and talking about the jelly. As you already know, the difference between the jelly and the jam, is he's going to take the jelly, and put it on her eye. He's going to take his dick, and jam it up her ass.

Also, your wife is maybe absolutely leaving you for someone who knows all about the jelly and the jam.