Fries. Sometimes I have 2 large fries, sometimes 1 large and 1 medium, sometimes 1 large fries. Depends on how hungry I am and how much money I have.
I'm in university halls where I don't think we're allowed chip pans for the fire risk. So it's not like I can just make them at home, because oven chips are awful. I tend to stop off at McDonald's if I pass it while shopping (it's next to Tesco, and I don't go there very often).