Here’s a picture of my toilet seat. It’s a special one with two seats. A seat for adults and a seat for children that attaches to the lid via a magnet.
This communication regards the poor design of this seat.
After my children’s bath I sit on the seat lid to dry #1. If you see the supports that transfer my weight force through the seats onto the toilet you will notice that they are NOT aligned. This results in a moment affecting the adult or lower seat. Over time and with my weight force this results in the lower seat bending and breaking at the point indicated. It’s a lovely seat, but it doesn’t take much to design it properly.