Fortunately, the Milk (Riddell)
Neil Gaiman et Chris Riddell2013

"I bought the milk," said my father. "I walked out of the corner shop, and heard a noise like this: T h u m m t h u m m. I looked up and saw a huge silver disc hovering in the air above Marshall Road."

"Hullo," I said to myself. "That's not something you see every day. And then something odd happened."