The 'Puking Rainbows' meme is a classic internet reaction used to signify that something is so incredibly cute, sweet, or wholesome that it causes a literal surge of colorful joy. Often depicted as a wide-eyed character—most notably the 'I Can't Even' or 'Rainbow Vomit' stick figure—this meme gained massive traction on sites like 4chan and Tumblr in the late 2000s. It evolved from early webcomics and quickly became the go-to visual for 'cute overload.' Today, it remains a staple of internet culture, used by fans to react to adorable animal videos, romantic tropes, or any content that is perceived as sugary-sweet to the point of absurdity.