The Rooms of Antiquities, the pleasant female voice can be heard from the earbuds of the electronic tour guide, contain a number of peculiar objects, many of which are not, in fact, ancient. Several of them were in fact thought to be ancient until they were discovered to be forgeries, or merely more modern pieces confused for older ones.
Theo darts away from the display, trying to avoid anyone in his path. What the hell was that?
Oh crap, seriously?
He runs back the way he came, then heads off into a different room, hoping there's a crowd he can get lost in.
He moves quickly to a display near the school group that blocks him from view of the room's entrance, then takes off his jacket and starts looking at some of the other museum displays, trying to act like he's been there all along.
Phew.
Now that the action is over, he wonders why he was so intent on getting away. Surely they'd notice it wasn't his fault?
Not like he'd want to risk it, though.
Indeed he does, though by now he's put it in his backpack - a 12" by 4" card is pretty conspicuous.
Eventually the school trip ends and he goes home.
Theo's in his bedroom, earphones in, listening to music. He's sitting on his bed, back against the wall.
His room is rectangular, with his bed, a chest of drawers, and a window on one side, and a desk and bookshelf on the other side, with a door opposite a window in the middle of the long edges.
Nope. Still not loud enough for Theo to hear it.
Maybe the tapping should try the other window.
Oh, well, if it's that loud it might get a response out of Theo.
"Yeah, Dad, what? I'm busy!" he shouts, in the direction of the door.
That causes Theo to take notice, and pull off his headphones, looking in the direction of the window with a mixture of shock and suspicion.
Continuing to look worried, he goes to turn the light on, then walks closer to the window, trying to get a glimpse of the source of the tapping.
... What.
"Haha, so funny." he says to whoever's moving the ping pong ball. Obviously it's someone who thinks they're very funny. "Get away from my window or I'll call the police."
"No, seriously," he says, as he starts looking around for the person. "Get away from my window."
He looks around for the person from a few different angles.