The phrase uses archaic Russian address, with kholop marking the speaker as a ruler talking down to a subject. Short Russian film quotes like this circulate widely in chats and edit communities because a single stern line can replace a whole reply. This one spread as a reaction clip for moments when someone is being told, in deliberately overblown fashion, that they have gone too far and should stop. Its lasting appeal is the contrast between formal, historical language and very everyday online arguments and teasing between friends.