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In Beer Pong Slo Ball Placement is where you move the ball inside a cup to the back of the cup. This makes it hard to make a subsequent shot in the same cup since the second shot is likely to bounce off the first ball.

Full detail rules for slo ball here:

http://beerpongleagues.com/rules/league-rules.html

Damn cheaters did a Slo ball placement when we were not looking and our second shot bounced out
by BeerPongLeagues March 12, 2009
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