The Happy Cat meme, often recognized by the catchy 'Happy Happy Happy' song loop, features a grey cat jumping with sheer delight. While the footage originates from older internet clips, it saw a massive resurgence in the early 2020s on platforms like TikTok and YouTube Shorts. It is frequently used in 'POV' style videos to represent success, excitement, or a carefree attitude. Often appearing alongside other characters like Maxwell the Cat or Banana Cat, the Happy Cat has become a staple of modern internet 'brainrot' culture and wholesome cat content alike.