It's a joke, son. The little :D (it's a "grin" smiley) is there to indicate that the preceding statement was not meant to be taken seriously.

That said, I find it highly amusing that people would jump the gun on something like that — still in beta and subject to change — and waste all that effort. I mean, that's 10,000 each of three kinds of fish, plus 5,000 Northern Spices, and then 250 banks slots to store it all... And the wastefulness of laying them all down like that! There's nothing in the item description that says you *must* serve it to a party. You can use them all by yourself, and they provide pretty good buffs to any class. Unless that guild was made up entirely of level 80 toons when they did this, there were (and are still) probably plenty of level 70-79 toons in the guild that could have gotten some use out of the feasts. Or even put them on the AH for other 70+ toons to use and at least get some return on the investment. But noooooo, it's more entertaining (for them) to disrupt a capital city by carpeting the place with fish.