DQ is the short name of Dairy Queen, a fast-food company famous for ice cream. People go there for a soft cone, a thick mixed cup they call a Blizzard, and also burgers and fries. You say it as two letters, D-Q, not as one word. It started in the United States and now has shops in many countries, including ones students here will have seen. Though actually, the same two letters can mean other things in other rooms — in sport, DQ can mean disqualified — but when someone says “Let’s go to DQ,” they mean the ice-cream shop. It is a brand, like a nickname the company is happy for you to use.