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When two people, wielding guitars, swing their guitars toward each other while playing muted notes at different pitches, so as to simulate the sounds from the original game Pong. The effect looks like a game of ping pong with sound effects, weird shaped paddles, and no ball.
Before The Upstairs played their set, Nick and Dave played a quick game of guitar pong to entertain the crowd.
by TommyD August 05, 2005