You entered the bathroom inside the cinema building. You decided to wash your hands before the movie started. You didn’t noticed that you accidentally entered the girl bathroom. There, you saw young teenager girl standing in front the mirror. She was flexing her large biceps, which was very visible thought her fishnet shirt, and holding her phone, capturing herself, apparently for sending the photo her boyfriend or post in social media. She seemed to be very proud of her muscles, praising herself of being such a beast.