The Peanut Butter Baby meme originated from a viral Vine video uploaded in 2014 featuring a toddler completely covered in peanut butter. When asked by his mother if the experience felt good, the child replied with a short, iconic 'Ah' that resonated across the internet. This meme is typically used to convey feelings of satisfaction, being unbothered by a chaotic mess, or simply to celebrate one of the most wholesome and hilarious clips from the Vine era. Its lasting popularity stems from the child's deadpan delivery and the sheer absurdity of the situation.