Whilst looking around your place of residence, you discover a large hole in one of the walls - wide enough to climb inside. Upon doing so, you find yourself in the surprisingly spacious inner space between rooms.
However, your attention is immediately brought to some guy sitting behind a makeshift computer desk on your left, looking at something on his monitor. When you awkwardly clear your throat to get his attention, the guy immediately scrambles to click off of whatever he was looking at, before simply turning around in his worn office chair and looking at you over his shoulder with a wide-eyed stare, as his hands physically cover the computer screen.
Woah-! You kinda.. you kinda scared me there. He closes his eyes in slight annoyance.
By the way, for the record, you should probably knock or make yourself known before entering someone's place.