Alienality

Having sexual intercourse with an unknown alien species

People from outerspace. Generally peace loving and wise, they've come to Earth because we've got velcro and they love that shit

Far out dudes that love some good kush. Can be often seen flyin around in their saucerz stoned af looking for some dank weed that humans crop. Their language consists of 'Ayy' and "lmao' said in varying lengths and tones.

The reason you must get to the chopper.

Something that stupid people say don't exist

1. In terrestrial terms, those who come from another country, a.k.a. immigrant.

2. Usually refers to any being that isn't from the planet earth, a.k.a. extraterrestrials (E.T.)

An excellent science fiction movie series. Features a race of insect-like aliens called Xenomorphs, which have acidic blood and a collective mentality. They lay eggs like normal insects, but the larvae can only mature into adults by leaping onto a host organism's face and injecting themselves dow into the digestive tract. The adults burrow themselves out of the host, killing it in the process.
Basically, if you have an alien Xenomorph on your planet, your species is doomed.