An elaborate sexual maneuver requiring preparation. One taps open bags of glitter or confetti to the tops of the blades of a standard ceiling fan. Then, while having sex, one turns on the fan. Thus releasing a shower of festive sparkling glitter on the entire act. (Made better if done after shooting your load on some part of your partner so that the glitter of confetti sticks to them.)

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.