Desu originates from the Japanese copula often used as a verbal tic by the character Suiseiseki in the anime series Rozen Maiden. The meme gained legendary status on imageboards like 4chan around 2006, where users began 'Desu-rolling' or spamming threads with images of Suiseiseki alongside the word. It is widely considered one of the earliest and most persistent 'forced memes' in anime culture, symbolizing the chaotic and repetitive nature of early 2000s internet communities. Today, it serves as a nostalgic nod to the golden age of anime memes, used either to jokingly overwhelm a comment section or to celebrate the history of otaku culture online.