Someone who tell people they play video games just for attention. Each gender has one reason why to do this:
Male: To look cool and fit in with the crowd.
Female: To show off that they're a girl gamer so boys will like them more.
You: Hey dude, I got a chopper gunner in COD yesterday!
Friend: Awesome man, I wanna be in your party someday.
Girl: Hey, you guys play COD? I like using the pistols.
Friend: *Whispers* What a game poser.