A person (or persons) who bursts in un-annouced, especially with the intent of catching you while you're masturbating (fapping). sometimes accompanying the surprise entry with a loud shout of "FAP PATROL!!"

Can also refer to a pet who approaches you while masturbating and tries to lick or touch your genitals.

Bonus points if the victim is interupted while ejaculating.

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.

(n) To burst in to anothers room, unannounced, and yell outloud such lines as "FAP PATROL", or "PUT YO' DICK AWAY". When successful, and awkward situation occurs.