A sound one makes when something unexpected happens, or a mistake is made. It can also be referred to as a shortened version of "Oops", except it's used more casually.
Op, Drew and Eli are fighting. Is this the end of a bromance
Op, I helped my ex cheat on his current girlfriend in a baby nursery.
Short for Original Poster. Used on online message boards and forums.
The the message the op posted is idiotic.
1. Demons are OP in this game, nerf
2. The OP is wrong, what we need to do is give birds a buff
is a faggot.
OP: Hey, guize. First one with post ending in 44 gets to name my cat!
Normal person: OP is a faggot.
1. Overpowered (usually in a video game, in which a person or group becomes or is too powerful; has become very popular in the mmorpg crowd)
2. Original Poster (in forum-style collection of comment; the first person to comment or POST)
3. Operation (usually occurring in military gaming)
4. Operation 2 (second half of co-op or cooperation)
1. "Paladins have become way too overpowered!"
2. "Why is everyone getting so angry, the op was obviously kidding?!"
3. "In COD4 I always play spec-ops (special operations)it's the only way to roll."
4. "I love halo because it supports co-op!"
In forum terms, OP refers to the Original Poster. The person who began the thread.
ForumGeek911: So yeh, the OP said you were dumb.
OP: That's right, I did!
ForumGeek911: OMG, He just necroposted.
Original Poster - Used in forum talk to refer to the person that started the thread.
To the O.P., what did you mean by "x, y and z"
You: What is OP?
Stranger: A faggot
You: yes, *reloads*