"Toxic" is a song by Korean-American singer BoyWithUke, originally self-released as a single on October 29, 2021.

BoyWithUke wrote and produced the song himself.

It went viral on TikTok[1] and received over 1.2 billion streams worldwide.

[2] The song features BoyWithUke singing about how "all [his] friends are toxic", dubbing them "so rude and always negative" and explores ideas of loneliness with his lyrics stating that whilst he may be better of by himself, he feels "kinda empty without somebody else".

Unlike some of his prior songs that had been inspired by ideas from TikTok comments, BoyWithUke wrote it "because it was an important thing in [his] life at the time".