General human dysfunction cont'd

So lets say you go to a grocery store for a can of Campbell's soup... the tomato kind.
Then you take the soup home, eat it, it's all good. End of story.
But no, it's not the end!
Instead, the following day you clip a coupon for 50 cents off Campbell's tomato soup, pull the soup receipt from the garbage, and trek back to the grocery store to say to the customer service clerk "I bought this soup yesterday and forgot the coupon. So please give me my 50 cents."
What do you think the response from the clerk is going to be? Do I even need to go on?
Anyhoo, this guy attempted exactly that today, but with a couple CDs. He lost! He did not get his five bucks because our $5 off coupons are point of sale only, same as anywhere else.
Please people, more common sense and less retardation.