When you are extremely high and see everything as nova colors
After smoking the drugs I was riding an orange horse.
by PhatBrownCow August 31, 2017
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To be under the effects of adderall.

Etymology: This word developed from the phrase "Ride the white horse." which is in reference to cocaine use, and came to popularity in the 70s. The similar stimulant effects of adderall have caused the effects of these two substances to be considered in some ways related.
I got to do well on this test, man. I'm about to ride the orange horse through this study session!
by CoreyD123 August 17, 2008
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