The 'Babies Eating Lemons' meme phenomenon stems from a long-standing tradition of parents capturing their infants' first encounters with citric acid on camera. These images and videos gained viral status in the late 2000s and early 2010s on platforms like YouTube and Facebook, eventually evolving into a versatile reaction template. The core humor lies in the visceral, uncontrollable physical response—the squinted eyes, pursed lips, and shuddering shoulders—that perfectly encapsulates a moment of immediate regret or an unpleasant surprise. Beyond just cute baby content, the meme is frequently used in internet culture to represent how it feels to read a 'sour' take on social media or to experience the unintended consequences of one's own curiosity.