A sexual act in which a partner deposits fecal matter on their partners chest, wipes their index finger in it, and proceeds to draw a line under each of their partners eyes similar to professional football players who use black makeup under their eyes. It is named for Green Bay Packer quarterback Brett Favre.

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.