Also "what the fuddmucking fudd," or simply "fuddmuffins."
"What the fuddmuffins, Lucas! Don't do that shit." & "What the fuddmucking fudd, that girl's name is Rainbow!" & *rear-ends someone's car* "OH FUDDMUFFINS!"
The Word Fuddu is generally used to describe a Dumb person whose actions make u hate yourself for befriending that person.
Basically, its a quality displayed by big time dumb, fools & retards...This is exactly like the word "Moron" just that it's in Hindi.