If you split the word into two different meaning it is easier to understand. A Necrophiphi is a person who has sexual intercourse with a deceased body. A Felcher is a male who has anal sex and when he releases seamen into the male/females anus then licks the semen with or without a spoon out of the anus

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.