Feed your buddy-pet with 30 humans :)
Youre travelling with your pet Willy through space in an interestellar spaceship when suddenly, Willy cries because he is very hungry. Youre near to Earth and you decide to land there to feed your buddy.
Kill as many people as possible and throw them into the Willys mouth to feed him.
Be careful with the police and kill all of them too because if they catch you, you will be jailed and there will be no one who could feed your pet....