#9 scrapes out the frosting. Usually she throws the cookie part on the floor but tonight she must have still been hungry.
#4 takes off the top cookie and eats it. Then he scraped the frosting off with his finger before eating the remaining cookie.
#5 just eats it all at one, bite by bite.
I have come to the conclusion that people must come to Earth pre-programmed for how they will eat an Oreo.