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1.
Term of frustration and discontent, usually spoken in a growling Cookie Monster voice. Commonly used either when something breaks down, or after a period of internally contemplating multiple simultaneous problems all at once and being overwhelmed by them to the point of screaming nonsense.
*smash!*
"Argabargabarg!!!"

(...Intense period of introspection with no definitive resolution...)
"Blah!!! Argabargabarg!!"
by Roseycheeks October 10, 2013