0_Apprentice
Do you believe that there will ever be an alien invasion?
1_Wizard
no. only in science fiction stories and movies lol 
0_Apprentice
amazing, since you are quite knowledgeable, how do we define an alien invasion? 
1_Wizard
it's simply aliens invade the Earth either to exterminate human life or harvest people for food, steal the planet's resourses
0_Apprentice
When did this word ever come into play? have there been any sightings? or it's just a figment of someone's imagination