An unspecified posession, said to be had by those who have never indulged in illicit experiences, specifically: cannabis
When one is said to posess their s., you can be reasonably sure that they have never partaken in smoking, weed, pot, ganja, certain types of shrooms
and/or baked goods.
This earliest usage of this word can be traced to Berkeley, CA where, legend has it, it was coined by an extremely large Russian man. Etymologically speaking, it derives from two germanicly based words stoned (as well as its variant, stoner) and virginity (see also: cherry).

The safeguarding of Earth and other worlds from biological cross-contamination (i.e. billionaires with too much time on their hands).

Also known as “planetary protection.” Planetary protection / quarantine “reflects both the unknown nature of the space environment and the desire of the scientific community to preserve the pristine nature of celestial bodies until they can be studied in detail.”

There are two types of interplanetary contamination. Forward contamination is the transfer of viable organisms from Earth to another celestial body. Back contamination is the transfer of extraterrestrial organisms, if such exist, back to the Earth's biosphere.

The condition of having never consumed the reefer

The condition of never having consumed marijuana.