How???

How deep of a sleeper are you??? Well I just heard a story on the news about a man and a woman that were sitting next to each other on a flight. Well the woman fell asleep and once she woke up, her pants were undone and she had a blanket covering her up down there. Now the guy could be sent to jail for 20 years, yikes!!!! I'll be the first to admit, that I can fall asleep on a airplane. Once the plane takes off, I'm out!!! But I will wake up for the littlest of things. So if the drink cart os coming down the aisle, I wake up for it. So how in the hell did this woman not wake up in the middle of this???