Euphoria:

a feeling of happiness, confidence, or well-being sometimes exaggerated in pathological states as mania.[*]
An exaggerated unrealistic sense of well-being.
Intense pleasure. Drug-induced euphoria is a "rush" or pleasurable feeling. It is caused by the release of the neurotransmitter, dopamine, within the brain reward system.

euphoria is the best part of getting high, yes? so there u go. also, euphoria would be the female part, euphroic sounds more..like a guy hehe. so there you have it!