Another case of simple instructions not seeming so simple when they end up in the head of your nearest and dearest. “Wash the pillows”, to anyone with even the most basic grasp of homecare, would mean wash the pillowcases.
The literal-minded masculine brain actually thinks it means to wash the pillows. The memory foam pillows. The memory foam pillows which probably have labels on them saying “Don’t wash me!” Also, if you are going to wash memory foam in a washing machine, you probably should stuff a couple of rocks in the machine for no reason. Someone’s off to the store.