End of May clips circulate online as a seasonal timestamp sound, shared in late spring edits when creators look back on the month that just ended. The phrase works as both a literal date marker and a metaphor for endings, so the audio travels easily between school year recaps, travel montages and personal diary style posts. Because its exact origin is not widely documented, its popularity comes from repeated reuse in that end of month moment rather than from a single film, show or viral scene.