イチコメ

interjection

first comment; first!

Internet slang used to claim the first comment on a post, video, or thread. Often written in katakana.

• 新しん着ちゃく動どう画がにすぐイチコメを書かいた。

  I quickly wrote 'first!' on the new video.

• イチコメ狙ねらいでずっと待まってた。

  I was waiting all along aiming for the first comment.