Have you seen a UFO?
Have you encountered an alien?
Have you been abducted?
If you believe in aliens, do you think they are friendly, or are they going to suck the juice out of us?
If their intention is to "share" DNA with us, do you think this is a good or bad thing?
Do you have a favorite sci-fi movie that exemplifies how you think an invasion could occur?
Are you currently doing anything (stacking up survival stuff) just in case?
Do you want to go back with them (if)?