Joan Rivers was a pioneering stand-up comedian known for fearless celebrity jokes across decades of television and red carpet interviews. This moment spread online from a 2014 street interview in which she was asked about President Barack Obama and First Lady Michelle Obama, and answered with the now famous we all know remark. Clips and reposts circulated widely on social media and forums, especially in political and meme circles, where the short line became shorthand for presenting a rumour as common knowledge.