JoJo Siwa won't allow ANYONE to make fun of her! Not even a fan! The Karma singer stirred up attention at her latest Infinity Heart Tour stop in Glasgow, Scotland on Wednesday, where she brought the show to screeching halt! Why? Because an audience member was "making fun" of her! Related: Cardi B & Nicki Minaj's Online Feud Reaches Boiling Point! In a fan video going viral on TikTok, the 22-year-old, donning a sparkly bralette and matching pants, pauses her concert to confront a fan who was apparently wearing a hoodie that took a dig at her: "No.