The Kostya clip circulates as a short name-call sound on soundboards and in messaging chats, where a single spoken name works as a complete joke by itself. With no confirmed source recording or character attached to it, its popularity comes from repetition among friends and small online communities who share a Kostya in their circle. Clips like this are saved, replayed and sent as reactions because the meaning is instant: someone is being summoned, teased or announced, and the brevity makes it easy to reuse in many different conversations.