Top Definition
expression of anxiety, nervousness or restless boredom. This behaviour is often exhibited at house parties and clubs by the designated drivers.

It is the 21st century equivalent of 'twiddling ones fingers'.
Lucas was standing at the wall aimlessly crushing his empty plastic cup, waiting for the party to end.

Joey was found Cup-Crushing backstage before his big performance.
by designated_driver September 11, 2010

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