When you piss or poo yourself because there are no pissing/pooing facilites located nearby. Generally there are two choices. Find a quiet spot and relieve yourself against a wall/parked car or if wearing dark trousers, run the risk of relieveing yourself in your pants.

Before the excretement occurs the individual can suffer large amounts of panic/anxiety before the event and embarrasment and disdain after the event, especially if witnessed by passers-by. If one manages to avoid getting caught short then the individual can enjoy a warm, triumphant feeling of relief and accomplishment.

Also getting "caught short" is a phenomenon largely related to binge drinking and is not gender specific!

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.