Illustrate a captivating scene of liquid 3D typography, where each letter appears to be made of a smooth, flowing substance. The letters should be rendered in a variety of neon colors, with light reflections that create a stunning visual effect. The background should be a gradient of deep purples and blacks, enhancing the vibrancy of the neon hues. Add subtle light flares and reflections to emphasize the playful and fun mood of the artwork. This piece should inspire wonder and curiosity, inviting viewers to delve into the intricate details of the liquid typography and its luminous qualities.