Who is that? (1)

"Hey, let's use this room; no one will be here as they are all concentrating on the exhibition," a girl said to her friend. Two teenagers walked away from the exhibition as bored as they could be. Their parents wanted them to mingle and make more friends with the upper classes like any teenagers in their rebellious phases, but they found that task too daunting especially with the silly works being referred to as artistic.

"This whole exhibition sucks!"

The two had been on their way to the balcony for some 'fresh air' and then decided to just hide from their parents. They could always lie later on that they had done as the should only if they were not caught red-handed. Upon chancing on that small room almost hidden from plain sight, they had the answer to their problem, but the two teenagers had no idea what was going on behind that closed door. 

"So what did your mum say last time? How could you have been so silly to be caught?"