In front of him, on the other side of the two-way loop, a yummy mummy sat in a booth at a table, dishes of pastel sushi under plastic domes circulating around her to electro-bubbly music.

Over her shoulder a weeks-old baby fixed his china-blue eyes on the passing feast, dribbling and puking snail trails on her left deltoid.  She, unaware, was bent over her smartphone on the table, prodding and swiping with her free hand.

What could a lady who lunches possibly find to get busy with on a smartphone?

Hot-flush embarrassment rose through him as he realised he was doing exactly the same thing.