Giving his co-worker a pat on the backside earlier that day was something he would learn to regret. After he is tied up, humiliated, and overpowered, she explains that she knows what else he's been up to in the office. He's got some apologizing to do, but she's going to make sure he's sorry, especially when he's left tied to his chair, blindfolded, gagged, and labelled as trash for the cleaners to find the next morning.