The phrase is written in Japanese as ハートミーですぃすぃ and is shared online mainly under its romaji slug hatomidesuisui. Because the recording is only about a second long and carries no music or context, it has circulated as a standalone soundboard clip rather than as part of a longer scene. Users search for it by its phonetic spelling and reuse it across anime edits, cute reaction posts and short form videos, where its brief length makes it easy to drop in without covering dialogue or other sounds.