When a fat person gets extremely angry, causing them to foam at the mouth, yell, kick scream, and generally make a scene. This can occur in either in the real world or online. Pretty much used as a substitute any time a fat person freaks out, especially if the situation concerns food or the individuals large physical appearance.
"That fat bitch had a world class blimpout when they told her the salad bar wasn't all-you-can-eat!"
by ClamsTheCat July 11, 2008