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エアプ eapu
Talks big, never actually played.
What does eapu mean?
From "air play" — someone reviewing a game or show they only saw in clips. The classic reply when a hot take smells like secondhand knowledge.
Example
その言い方、完全にエアプだよ。
The way you said that is total armchair-expert energy.
Vibe
Who you can say this to, and how it lands.
Friends only Casual. Natural with friends, out of place at work or with strangers.
Aimed at another person, this is an insult.
The story behind eapu
エアプ shortens エアプレイヤー, and the エア is the same one as in エアギター: you are performing the motions with nothing in your hands. It settled into gaming communities during the 2010s and now applies to anyone reviewing a work they have only met through clips, summaries or other people's opinions.
Streaming culture made the accusation both easier and harder. You can watch fifty hours of someone else playing and speak fluently about a game you never installed, which is precisely the problem, but you can also learn a great deal that way. The result is a defensive habit worth noticing: Japanese posters often declare their own status up front, admitting エアプですが before saying anything at all.