@Lordyaswas,
												Fresh or Frozen? 
Is there a certain number of Kilos necessary? 
How do you prevent them from taking revenge? Even without a return address, they'd know it was from you because what other twit would do such a thing? 
This is not a strategy I would advise for anyone else, but if it works for you.... .
I miss the old traditions. In the past, people would just go to the other's house. Place a large paper bag filled with manure (fresh, not frozen) on the porch, set it afire, ring the bell and run. 
Joe(ah, good times>)Nation