The act of being drunk or stoned to the point of experiencing life as if riding a roller coaster.
Katie was so rollertoasted last night she walked around the party with her arms held up!
by st. sneaky pete September 23, 2010
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Noun
Rollercoaster, only more mental.

Verb
Move, change, or occur in the dramatically changeable manner of a rollertoaster.
The last two weeks have been a real rollertoaster.
by TheWrongun July 11, 2013
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