After a long day, your sack begins to sag and slowly nestles its warm elasticity tween your legs. After an hour or two it begins to itch. So one must casually reach below and yank it up out of the crotch nest. This is the nutsack shuffle. Also known as a "nutty shuffle, plucking the birds nest and juggling"

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.