Stands for: Pull a Fatkid. It occurs when you stuff yourself with too much food. Very common, for example, after fried seafood platters, cheap Asian restaurant buffets, and after inhaling a Super Burrito. It often accompanies holidays such as Christmas and Thanksgiving, as well.
Oh man, I just pull a FK. Should have stopped after that second Double-Double burger.
by JJPC March 29, 2008