Abbreviation of "But guess what? It was so depressingly lonely for me",
one of the most iconic lines in Thailand's cinematic history from the character "Pat" in GMMTV's Bad Buddy Series (2021).
This line is so legendary and
unforgettable and that's why every time a character in Thailand series or movie has similar line with "But guess what?" or "But
you know what?", fans of Bad Buddy Series or BL series fans in general will immediately think about this iconic line from Pat. Thus, to make it easier to use this line everywhere, fans on Twitter made it into an abbreviation.