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1.
From the game "Shake it up" on Mario Party 8 for the Wii, in which a player must shake his/her can for 5 seconds and whoever has the highest stream wins. Naturally, this became a great innuendo for jerking off.
-Where the hell is John?
-Probably shaking the can.
by Live Texas Boatshow February 09, 2008
 
2.
the act of male masturbation
Trevor asked his friends to leave the room while shaking the can to a gay porno.
by Kyle Johnny Punani July 21, 2007
 
3.
To give a handjob.
Last night she started shaking the can until it exploded
by Nathaniel77 October 16, 2009