I'd say it has to be classified as indecent exposure. I mean, if it had been a decent exposure, she wouldn't be complaining now, would she? He must just not measure up....
Good point... maybe he needs to hit the gym... I bet if it was Brad Pitt... she wouldn't be complaining! If I saw some neighbor of mine, naked, through the window, I'd laugh but hey... look in the window you get what you see.
Now for the double standard, had this been a woman and a guy saw her... he'd be bragging, getting high 5's and his friends would want to visit his place as soon as they could... (unless she's some horrible fat chick) since it is the other way around, ewww, perv, blah blah blah.