As mentioned in a previous post, there was a group at Rev T's college for the spouses of Ministers in Training.
A friend who attended the group told me this. She is not a woman given to to exaggeration or making stuff up!
This piece of advice has never featured in any marriage prep sessions we've done. But it may work for someone.
The leaders discussed the various problems a vicar’s spouse faces™. One of the major problems was "Keeping The Magic of Your Marriage Alive".
As you're both busy, it's difficult to find time and energy for sex. As this is part of the glue that holds a marriage together, it needs to occur regularly. Valid point. When both of you are working, it can get: "Remind me ... who are you again ...?!"
A suggestion for solving the problem was to embroider a pair of pillowcases with a pretty design. When one of you wanted sex, the pillow would be turned over so the embroidery was face up.
If your other half saw this and turned the pillow over embroidery side up, you were on a promise. If the pillow remained plain side up, then you weren't. It was important to respect what the pillow said. If it said no, then it said no!
We have not tried this at home. Embroidery is not one of my skills. Carol, a friend who is an amazing needlewoman, offered to embroider me a set of pillow cases with the words, “Fancy A Shag”. This may not have been quite what the person making the suggestion had in mind!