Colin Farrell recently revealed a trick he used to gain weight for an upcoming role he has in the movie Lobster. While you can catch Farrell looking stealth and fit as Percival Graves in "Fantastic Beasts and Where to Find Them", the actor told Yahoo Movies ?I ate a lot of ice cream, I would just melt it in the microwave and chug it back. And cheeseburgers and fried foods for breakfast.