Cufflinks!
Selling a shirt with French cuffs, which means you need cufflinks. I say in the listing "you need your own cufflinks". I get a message from potential buyer, "please send photos of buttons on cuffs". I respond that there are no buttons, and that as the listing said, you need cufflinks, and that this is common with higher end British shirts. Potential buyer responds, "so how do I close the cuffs if there are no buttons" 🤦♀️ Cufflinks!