The coqui is a small tree frog native to Puerto Rico, and its name imitates the two syllables of its call, which has become one of the island's most recognisable nighttime sounds. Recordings of that call have long been used in travel videos, nature documentaries and island-themed media to signal a warm evening outdoors. Online, short versions like this one circulate on soundboards and in meme edits, where the punchy, repetitive pattern works as a quick tropical cue without needing any explanation.