An illiterate and inarticulate
millennial's attempt to convey strong feelings, but who lacks any vocabulary or language skills for doing so, so a catchall phrase from a
popular song is used instead. Usually the emotion being conveyed is
love, lust, or annoyance, or a mixture of these. But it is generally impossible to understand the specific sensation being described without further research. The only practical way to extract the emotion intended is to have the individual write (in emojis) or illustrate the thought with an image meme.