I was reading the script for Predator. The scene early in the movie where the two helicopters are taking Arnold’s team to start the mission.
The original joke Hawkins tells Billy goes like this:
HAWKINS
Hey, Billy, how many marines does it take to eat a squirrel?
Billy looks back, shaking his head, uncomprehending.
HAWKINS
Two. One to eat it and one to watch for cars.