head trip

noun Slang.

a mentally exhilarating or productive experience, as one in which a person's intellect or imagination seems to expand.
ego trip.

Origin of head trip

First recorded in 1970–75

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

This 2001 head-trip from the inimitable David Lynch bears some similarities to Black Swan.
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