Top Definition
When someone trying to solve a Rubik's Cube gets bombarded by others that are trying to tell them how to solve it. Backseat Rubik's-Cubing tends to happen at AcDec competitions while waiting endlessly in the lobby.
It was hilarious watching Grey and Brandon Backseat Rubik's-Cubing Busby while waiting in the lobby before the AcDec competition.
by Elle-Chan April 15, 2010

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