I was in the checkout at the store, and I sort of noticed this girl come in, but she didn't have anything I was interested in. I noticed the guy in the line next to me behaving like I would when I do see an interesting female. Also, it seemed my (male) cashier was doing the same as this dude. I didn't turn around. I just watched them. After a bit, I tapped the guy on the shoulder and asked, "What did that female you were watching have?" He paused and then said, "...her hard nipples." Laughing, I said, "Ohhh. I didn't notice." I did get a chance before I was done to see this female and her apparently hard nipples. I guess they were. Um.