Caneta Azul is a song by Brazilian singer Manoel Gomes that first became a sensation in Brazil through WhatsApp and social media shares, where its simple chorus and earnest delivery made it instantly shareable. Clips of Gomes singing it were remixed, parodied and turned into memes, and the tune later spread internationally on TikTok and Instagram Reels. It remains popular because the melody is easy to recognise, easy to sing along to, and instantly sets a cheerful, slightly absurd tone in short videos.