orange horse 

When you are extremely high and see everything as nova colors

After smoking the drugs I was riding an orange horse.

orange horse by PhatBrownCow September 1, 2017

Ride the orange horse 

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!

Ride the orange horse by CoreyD123 October 16, 2008