Your roommate is sweating buckets after her walk and comes to cool off in your room by the window.

Marina is your roommate. She read online that you need to run to lose weight, so she runs every day. Unfortunately, the summer has been very hot, and after her run, sweat pours off her in liters. But you often have no cold water, and the only place in the apartment where you can open the window wide is right above your bed. So she comes in, strips down to her underwear, and waits on your bed for the wind to cool her off. She always does this facing you, because, according to her, other positions don't give her the right airflow.