An orange so delicious that upon first bite, one becomes so sexually aroused that they jizz in their undergarments.
Stephan: "Fuck, this orange I bought from SuperStore looks incredible."
Pat: "Maybe you should eat that in the can. I don't want you to orangegasm near my medicine ball."
The inability to keep ones sexual arousal "in their pants" when seeings something of the color orange
When Harold saw the orangetraffic cones lining the road, causing him to have an orangegasm, he ejaculated all over his windsheild, thus causing him to crash.