The 'IDK My BFF Jill' meme originated from a 2007 television commercial for Cingular Wireless (which later merged with AT&T). The ad depicts a young girl named Zoe rapidly texting her friends while her mother questions her about her phone usage and high bill. When the mother asks who she is texting, Zoe sarcastically replies with the now-legendary line, 'IDK, my BFF Jill?' while walking away. This phrase quickly became a viral sensation during the early days of YouTube and social media, symbolizing the generational gap in communication and the rise of SMS abbreviations. It remains a staple of early internet culture, frequently used to represent dismissal or the absurdity of 2000s-era cellular slang.