Justin Bieber’s emojis are advancing the art of making fun of Justin Bieber

With Kimoji, Kim Kardashian proved that branded emoji apps are a great way to engage with fans and make millions. Other stars have followed suit. Among them are Wiz Khalifa, Amber Rose, Rick Ross, and—just this week—Steph Curry and Justin Bieber. Using celebrity emoji isn't as seamless as dropping an eggplant or…