When a person has the ability to see breasts everywhere.
No amount of reason can deter the wishful boobthinking person's confidence that boob has been viewed.
Most wishful boobthinkers are in denial of being one as they really believe they are viewing boob. On the bright side they are happy about seeing boob and have a better day because of it.
My husband has wishful boobthinking. He got so excited when he saw my boobs in a reflection on my Facebook pic. I disagreed, which made him even more snotty about thinking he had looked closer at my pic than I did.
I was in the dressing room with my friend as we tried on bathing suits. As I was admiring a low-cut, Italian number on myself, she looks over and giggles, sideboob to me and points. As I turned around in the mirror, I was satisfied that the coverage was satisfactory. I love knowing my bff has wishful boobthinking.