A sexual act, when a lover farts in another lovers mouth while ejaculating on their chest. Also know as the Dutch Apple mustache ride

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.

this can be done by anyone as long as it involves two people, u start by inserting the index finger into the bumhole, work in your middle finger and so on with the ring and little finger, then the thumb gets involved, so u have to pyramid your hand to get the thumb in, once in the hand has to be forced past the threshold and once inside a fist is to be made, once your fist is form and turned into uppercut position, this is your apple, then with your other arm wrap it around their waist and pick them up, then thrust them with your apple untill they scream, what makes this dutch is u have a schmoke and a pancake afterwards

To fart in someone's face while they're teabagging you.