How can a man reply humorously when he says he didn't wash his hair?

You don't have to wash it. It doesn't matter.

The man said he didn't wash his hair. You can say that although I haven't washed my hair for a few days, my head is still full of fragrance. It doesn't matter if you don't wash it I like it.

If I tell you that I haven't washed my hair for several days, it means I still want to stay at home. I really don't want to go out. I think it's too boring outside. I just want to lie comfortably at home.