The act or desire of inserting oneself fully into a woman's vagina, much like a tampon, presumably head-first.
Allegedly in reference to the wire-tap tapes of phone sex between Charles, Prince of Wales and Camilla Parker Bowle, in which he was said to express a desire to "be her tampon", and wanted to climb inside her vagina.
Phrase is attributed to William Gibson, Canadian author of "Mona Lisa Overdrive" and "Neuromancer".

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.