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a group of players of hacky sack gathered around in a non-angled shape most of the time shoulder-to-shoulder (with more than 2-3 feet between the aligned shoulders). The majority of the time, the Hack Circle is formed in corridors or hallways thus blocking civilian traffic and is very annoying for outsiders attempting to walk around the circle.
Example 1
Tom: This Hack Circle is getting too big, we need to play elimination.

Example 2
Tom: Stop walking through our Hack Circle!
Steve: Sorry, dude
David: They need to move, they are right in middle of the hall.
Steve: (to David) Damn stoners
by Danielh121 April 27, 2008
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