When explosive diarrhea hits without warning and at the most inopportune time and causes an individual to shit their pants (one must be wearing pants). The Mud Saddle is created when the loose stool flows from the anus and runs down the inside of each pant leg to approximately the knee or slightly above the knee level. The wet shit soaks through the pants 1/4 to 1/2 of the way around the front and back of each pant leg as well. This wet, brown mess is visible from the front and from the back and gives the appearance of a brown riding saddle. One is considered to be Riding the Mud Saddle until such time that they are able to reach a place of privacy to remove their pants, clean up and put on new apparel. Generally, pants that have had a Mud Saddle created on them are disposed of and are not reused.

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.