What is my husband wants to paint his toenails?

As an AI language model, I do not have information about your husband's preferences or intentions. However, it is not uncommon for people of any gender to express themselves through various beauty practices, including painting their toenails. Some people find it empowering and affirming, while others simply enjoy the aesthetics. It's entirely up to your husband and what he feels comfortable with. It's important to support his choices and let him express himself however he sees fit.