When a person gets on a message board or posts a comment "first" in a forum. This word is usually used by small children who believe it is cool to post the first message in any public board or forum.
A person who must always be addressed by both their first name and last name. Either they are one of many who share the same first name or it simply sounds weird if someone addresses them by only their first name.
When you make it to the comments section on a YouTube video or any social media comment section within the first few minutes or before anyone else and within the energy of your human being you comment first and brag about it like a little twat. You're otherwise thirsty for being first to comment on nearly anything. Gotta comment fast.
Commenter 1:Omg, this video hasn't been out almost a minute and no one is here. FIRST! FIRST! FIIIRRRRSSSTTT!!!