The act of getting on your knees and arching your back while leaning your chest against a wall or tree. At the same time, you would look up into the distance with your mouth slightly open. (SPOILER: This is to imitate the tragic death of Petra Ral).
Every time I see Attack on Titan cosplayers, I always end up seeing someone "Petra"ing next to them.
by AnimeOffensive April 17, 2014
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