In the "Meet The Sniper" trailer, the sniper pokes a bobble head and says "Boom, headshot." The bobble head is a reference to the Team Fortress Classic gamemode "Assassination", in which a group of snipers must kill a V.I.P. to win, and the phrase "Boom, headshot" is a reference to an internet mockumentary series called Pure Pwnage, in which a character called FPS Doug exclaims the phrase throughout.
Contributed by sandvichisspy
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