The sound comes from "Into the Thick of It!", a song performed in The Backyardigans, the animated children's series that ran on Nickelodeon from 2004. In the episode "The Heart of the Jungle", the characters sing it while pushing through dense jungle growth. The song found a second life in 2021 when it spread widely on TikTok, with users pairing the line with hikes, overgrown gardens, and everyday misadventures. Its nostalgic melody and earnestly adventurous lyric turned a preschool song into a widely reused meme for heading into trouble.