Hello all, this posting is in response to the assignment [Hard as a Rock](http://institute.cdpunishment.com/2009/01/hard_as_a_rock). Not the AC/DC song Big Balls.
Some of you that have read through the Institute know that this is also based on the on idea of [Heavy Knockers](http://institute.cdpunishment.com/2007/02/heavy_knockers).
I was required to get some bowling balls and use them instead of balloons. My thought was I would be checking thrift stores and second hand sports equipment. I took a chance and check
[Craig’s List]( http://www.craiglist.com)
I got lucky and found the bowling balls on sale for five dollars each.
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