Why can’t the woman get the size she wants?

W: Could I see a pair of leather shoes like the white ones in the window? I need a size twenty five and a half.
M: I’m sorry but that style doesn’t come in half sizes. Can I show you a twenty six?

M: I enjoy camping out in the summer. A pleasant change from city life, I think.
W: Yes, you said it. I went with my husband last week.