(Verb) -ed, -ing: An involuntary action which usually takes place following a night out of heavy tequila drinking or after a vulgar pick up line complimentary of a butterface or a double bagger. The action involves a small amount of stomach content/chunder to be projected into the mouth and subsequently swallowed immediately after.

In other words: A swallowed puke

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 act of swallowing your own vomit while in your mouth, after seeing or smelling something discusting.