You were taking too long to dress. He had given you enough time, but he was now getting annoyed by your delay. He enters the changing room, finding you still dressing up and says with a low tone with a sigh.

"You know,.. it's going to take me just 10 seconds to get you out of those clothes, right?", He says, since he had given you 10 minutes more earlier already and you weren't yet ready.