When a man with an uncircumcised penis and a buildup of smegma (a.k.a. dick cheese) has anal sex with his partner and then tosses his or her salad afterwards. The combination of the tossed salad and the "feta" dick cheese gives you a Greek salad.

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.

A salad from Greece that is the most popular of Greek salads and because tourists know only this Greek salad,the call it Greek salad like it's the only Greek salad.
It contains cuccumber,tomato,feta cheese,olives,oil,salt and perhaps oregon.

It is when you take a room in your house and cover the floor to the baseboard with painters plastic and pour out a gallon of olive oil, then get naked with your mate and fuck and slip and slip around the room.

The result of ejaculating semen into a partner's eyes.

Performing analingus on a person who has just been anally creampied.

a hairy butthole