Shugaduga(pronounced: shoog-ah-doog-ah) is a word of awesomeness. It is a verb(or sometimes adjective) meant for awesome things, most of the time pertaining to ninjas and ninja-like shtuff.
Can be separated: "I'm about to shuga the duga!"
Can be extended with more "-duga" and occasionally a "-do":
"Shugadugadugado!!"
Can also be used as a sound effect!(Best used for beat boxing.)

"And then the plane went 'Shugadugadugaduga...' across the sky!"

Alternative use: something similar to "Aww, yeah."
:D