Rather than inappropriate ideas, we can think of a story like 'The Husband and Wife's New Beginning on the 40th Birthday'. They could decide to start a new hobby together, like painting. They sign up for a painting class, and every day they paint together, exploring their creativity and deepening their bond.
They could go on a hot air balloon ride. Floating in the air, they can enjoy the magnificent view and feel the tranquility together. It would be a very romantic and unique experience for their 40th birthday.
There might be some fictional or made - up stories with such a title in the vast expanse of the Internet or in some very underground or non - mainstream literary creations. However, in the world of classic and widely - read literature, this doesn't seem to be a prevalent theme. So, it's likely that if it exists, it's in some very specific, not - so - well - known corners.
Once upon a time, a wife was doing laundry and found an old pair of panties that had a special memory. She showed it to her husband and they both laughed as it reminded them of their first date when she was so nervous that she accidentally ripped a seam on those panties. It became a funny and endearing moment in their relationship.
One great surprise could be to recreate their first date. Set up the same location at home, cook the same meal, and play the same music. It'll bring back all those nostalgic feelings.
One possible story could be that the wife is into some unique fashion trends. She buys plastic panties which are quite different from the usual ones. The husband at first is a bit surprised but then finds it interesting as it represents her individuality. They might even have a fun conversation about how it makes her feel special and different.
A wife lost her favorite pair of panties. The husband searched everywhere for it. Finally, he found it hidden under the bed. He presented it to her like it was a precious treasure. She was so touched by his effort that they shared a very romantic moment.
One possible story could be that the wife accidentally leaves her panties in a very obvious place in the bedroom. The husband, seeing it, starts to recall their early days of courtship when everything was so new and exciting. He then playfully teases the wife about it later, and they end up having a great laugh together reminiscing about their relationship.
A simple and budget - friendly surprise could be to make a homemade coupon book. Fill it with things like 'one free back massage', 'a home - cooked meal of your choice', etc. It's personal and doesn't cost much.
The husband was shaving one morning and accidentally cut himself. His wife rushed in with a pair of her lacy panties to stop the bleeding. They both had a good laugh about it later, realizing how silly yet resourceful it was.