In Reply to: "go pound sand!" posted by robert bryson on April 09, 2009 at 02:33:
: Back in 1949 while attending Northeast High School in Philadelphia, Pennsylvania I was taking an industrial arts course in wood patternmaking. In our assignments we constructed small wooden patterns and molded them using lead using the contents of a large bin of dampened sand. The typical pattern was made of two halves and were separately mounted within the Cope and Drag within a metal framework. The most important action in securing the pattern within the Cope/Drag frame was filling the area around the pattern by pounding the sand skillfully and properly. There was more to this operation that I have covered but I have now gone far enough to get to the subject.
: One day after school, while playing one of the many street games we engaged in I engaged in a mild altercation with one of my buddies and in response to something he said I barked out
: "Aw, go pound sand up your ass!" For some reason this broke down the house with laughter from all present. I had to explain that the phrase simply leaped out of my mouth unplanned. However, the phrase caught on and was used more and more locally. I cannot say that I was it's source but nonetheless it was original by me.
Thank you for your interesting anecdote, and the enhanced version of the saying, "Go pound sand." If you are not the source, it is at least plausible that the full version of the saying has always been what you said, and that it was said by someone with experiences like yours.