When your getting a blow-job and as your about to cum, you hold the girl's head down and suddenly shove your cock deep into her mouth. This results in either her tonsils getting crushed, or even better a full throat penetration. At this point her head is held down as a sticky load coats her tonsils or otherwise is blasted down her throat.

The key to this move is the surprise factor. The girl receiving the "tonsil surprise" must not be expecting the move, thus she will be quite surprised as the move is suddenly executed.

In order to achieve the maximum surprise factor, the blow-job is allowed to occur at a gentle pace, with minimal thrusting. A slow build up is desireable, followed by a sudden thrusting into the mouth at the point of ejaculation. The back of the girl's head is typically held down firmly with both hands, to ensure maximum depth of penetration and to prevent the girl from being able to pull her head away before the ejaculation is complete.

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.