Particularly used in the Video Game 'Call of Duty: Modern Warfare 2'. Where a player uses the Grenade Launcher attachment for their weapon to kill just 1 enemy player, rather than a group of enemies.

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.

To be noobtubed, it is to lose your virginity or have your v-card taken. It is called noobtubed because you are doing a "noob" vagina or penis that has no experience with sex.