The Respect + cue comes from Grand Theft Auto: San Andreas, released by Rockstar Games in 2004. In the game, respect is one of the stats tied to CJ's progress and standing, so the sound became associated with earning approval or status. Online, fans started using it as a quick reaction audio for moments that deserve recognition, much like the GTA SA Mission Passed sound is used for obvious wins. Its staying power comes from how short, clear and instantly readable the cue is.