Little is known about the original recording behind Iscominau, and the title appears to be a phonetic spelling of the phrase it captures. The clip circulated on user generated soundboards as a short reaction sound, where its unclear wording became part of the appeal. People share it in meme edits, gaming videos, and group chats as a quick warning that someone or something is about to arrive. Its lasting use comes from that flexibility, it works for heroes, villains, pets, teachers, or anyone making an entrance.