This audio is widely recognized online as the setup line from the fish meme version of “you know what that means.” It spread through short-form meme edits, reposts, and reaction compilations where the phrase is followed by a fish image or another deliberately obvious payoff. Its staying power comes from how short and reusable it is: creators can drop it into almost any format to signal that a reveal is coming. The meme survives because viewers immediately understand the rhythm, even when the actual joke changes.