Luna's Disrespectoid name is Balloona Luna. She upsetted the
pouch by trading it for water balloons, then she turned into a
balloon.
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One of the first notable duke-unc games was when duke upsetted
them on March 2, 1968, though the history no doubt goes as far back
as the early 1960's.
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No. "Upsetted" is not a proper usage of the word "upset." If you
need to say something made you upset in past tense, saying "upset"
is still the correct form of usage.