Happy Fun Rock Dupe

Hey All,

While doing dungeons with a friend, I came across a dupe for Happy Fun Rocks that allowed me to infinitely generate rocks.

How this happened:

At the end of the dungeon my bags were completely full
My friend threw a Happy Fun Rock at me, and noticed it didn't do anything since I had full bags.
He continued to spam the Happy Fun Rock for a bit, probably 20 times or so.
When I went to check my mail, I noticed I had 20 Happy Fun Rock generated from the Postmaster.

So basically, I now have 20 Happy Fun Rocks in my inventory from my friend throwing that one rock at me while my inventory was full. Happy Fun Rocks are going for 100g each on my server. So technically I turned 100g into 2000g when they sell.

I tested this on my own, since I don't have a second account, this was a little more tedious. Having a second account will work a lot better. Here were my steps:

Make Level 1 character
Send money to level 1 character and buy enough items to fill your bags
Alt-f4 off level 1 character, and quickly log onto another character that has the Happy Fun Rock
If your level 1 is still logged in, start throwing the Happy Fun Rock at him, nothing will appear to be happening
Log back into level 1 character, and check mail. You will notice a lot of mail from the Postmaster.

I am unsure if this has been posted before, I have searched the site and Google and seen nothing on the topic. If this is known, I will delete this thread. I think the Haunted Momento is throwable as well, I dont have one to test however. If you guys can think of another item that may be beneficial to dupe post it up! (Should probably add, this will be bannable and probably fixed.)