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1.
"The origin of the expression go pound sand is from a longer expression, not to know (have enough sense to) pound sand down a rathole. Filling rat holes with sand is menial work, and telling someone to pound sand down a hole is like telling them to go fly a kite. The expression dates to at least 1912 and is common in the midwestern United States."
by Anonymous October 31, 2003
 
2.
to tell someone to fuck off.
My brother told me to go mow the lawn. I remarked "pound sand!"
by "J" August 10, 2007
 
3.
To order someone to go away or "get lost." This is a widely used term that has no vulgar connotations.
One friend told another to pound sand when he questioned the veracity of the Old English Dictionary.
by relished January 17, 2011
 
4.
To tell someone that what they want isn't going to happen. The concept of pounding sand is to do something pretty useless. You can hit sand all day long, it doesn't change at all. So by telling someone to "pound sand" you are telling them that they will never get their request.
The debt collecter threatened me but I told him to pound sand, that he wasn't going to get another dime out of me.
by Borrower February 04, 2013
 
5.
A term used when annoyed with a person.
Why dont you go pound sand up your ass Chad!
by Jerry July 13, 2003
 
6.
To stick it where the sun don't shine.
Why don't you just go Pound Sand!!!
by Matt Wells August 06, 2003
 
7.
Walk away (from the fact that each step requires one to press down the sand beneith one's feet; from Hawaiin slang)
Go pound sand.
by Big Steve September 04, 2003