Spike was aware that Rarity always left a window open in the back in order for fresh air to come in. He also knew just what window was going to be open. Though his eyes fell upon all the closed curtains windows and that alone managed to raise some questions in his mind. The little dragon jumped out of the bush and rushed his way undetected, on clear day no less, over to the back of the building in order to find the much desired window. It was even a surprise to himself that nopony saw a black catsuit wearing dragon running from the bush and towards the building. Either that, or they just didn't wanted to see it. It had to look pretty embarrassing in the eyes of ponies.