Son told me he likes it when I walk around the house naked.

Sometimes I like walking around the house naked. So when the whole family was out visiting friends and family yesterday, I decided to take advantage and do my housework in the nude. It makes it a little fun. While I'm vacuuming the living room, my son comes home. It's not something he's never seen before, but being polite, I offered to put some clothes on when I finished vacuuming. That's when he tells me I don't need to do that, and he likes seeing me naked. I was a bit surprised, because he's never said anything like that before. I told him if he wanted to, he could. So he took his clothes off, and immediately I notice he has a hard-on. I'm not sure if it was me, the situation, or maybe another girl he was thinking about. I'd like to think it was me, though. Nothing happened between us, but it's been on my mind since.