The classic phrase uttered in almost very sci-fi B-movie
ever made. Whether it's earthling
s landing on an alien planet, or little green men from mars
stepping out of their flying saucer
on the White House
lawn, protocol and tradition demands that these lines are said.
Once those formalities are over and done with the slaughter
can then begin.
This was parodied perfectly in Mars Attacks where the bug-eyed monsters ran amok on earth yelling out "We Come in Peace! Shoot to kill!"