This tone comes from the Samsung GT-S5570I, an older Galaxy phone where Sherbet was one of the built-in notification sounds for incoming messages. As those phones were replaced, the sound survived online because people recognised it instantly and uploaded it to soundboards and video editors for reuse. It is now used less as an actual phone alert and more as a short, nostalgic audio cue, a way to signal a message arriving in a skit, a meme, or a reaction clip without needing any dialogue.