When my wife & I were first married and just learning about sex (and still kinda shy actually talking about some topics) we would sometimes put a little note in the "Joy of Sex" book. Maybe something like "Page 147", or just a slip of paper at a particular page. Then leave it under the other's pillow, or in a dresser drawer. Nowdays you could do something similar by emailing an internet link, or load it into his browser's "Favorites" when he isn't looking. Or find an account of something similar to what you want, print it out, and give it to him with a note like, "This sounds like fun!".

Kiss-and-tell time: It might get out of hand. One time I found a note in my lunch, something like "JofS pg 352". That day she was providing some elderly home care, and wouldn't be home until around 1AM. I went home to an empty house, made dinner, and finally found the "Joy of Sex" - and the page she mentioned was one page number more than the last page in the book. She had left a note to the effect "April Fool! You ain't getting none tonight!" It was April 1st . . . and when she did that particular job assignment, we always made love in the morning anyway so the "ain't getting none tonight" part really didn't mean much. It was just the tone of voice that she wrote it in . . .

So I decided to "get even". When she walked into a dark house and went to hang up her coat, I jumped from the closet, threw a blanket over her head and proceded to "have my way with her". She figured out that it was me pretty quickly, but the first minute or so was too realistic and too terrifying for her, and I had to promise to NEVER do anything like that again!