As she strode through the market, weaving delicately between the booths, she caught herself musing on her uncle's health. She'd clearly wounded him badly when she'd used him as a diversionary tactic to escape from the Avatar and his little friends, but she hadn't necessarily been aiming to kill. In fact, she'd aimed just a little to the right of her uncle's heart. Granted, she didn't particularly care if he died - he was a traitor to the crown after all - but even Azula had some respect for family. And speaking of Iroh...
Azula's sharp ears caught the strains of a familiar voice crooning a familiar melody. Turning slowly, Azula's golden eyes scanned the crowd (and pushing some people aside) until she'd picked the right tuft of grey hair from the bunch. Aha. So he hadn't died. That was good to know. The smallest of smiles quirked at her lips as she silently moved closer, trading her confident gait for a stealthier one as she worked her way to a better position from which to keep an eye on her dear old uncle. If her idiot uncle was here in Ba Sing Se, it meant that her idiot brother couldn't be far behind. She would look for him momentarily, but first she wanted to have a little fun with her uncle.
After assessing his condition as best she could from her vantage point, Azula cornered some small children and knelt down to speak to them, her eyes harsh and cold. She was tempted to stick to threats - the fear in the children's eyes was just precious - but by now she knew better than to scare children too much. People who were too frightened were useless, and children tended to scare easily. Instead, she switched to the honey-laden timbre she'd so often used with Zuko to persuade him to do things for her. "You see that man over there?" She asked them. "I'd love it if you would do something for me."
It only took two shiny coins to convince them, and within seconds Azula was watching, her arms folded across her chest, as the children took off, running right chased each other right past her uncle, one of them calling, "Hey Lu! Ten cups! Hey Lu! Ten cups!"
The human brain was dreadfully complex apparatus, and Azula had found that sometimes context of a sentence had nothing to do with what the listener heard. The cups were, of course, irrelevant; Azula was sure that the only thing Iroh would hear would be "Hey! Lu Ten! Lu Ten!" She smirked. Served him right for singing about soldier boys.