Expressed when something extremely amusing occurs. Can also be used to avert or hinder someone from speaking. Frequently used in the British sitcom Miranda.
Funning is a word you use when someone has asked you "Are you having fun?" or something annoying while you are trying to enjoy something. Instead of just saying "Yes, I am having fun." You can say: "I'm funning!" and then the person who asked will now begin to ask people "Are you funning?" This word is for convenience, so use it.