The other day at Subang airport, I saw an 'ang moh' couple making their way to Mc Donalds in the separated building. The lady was walking in front of her partner, who pushed the baggage trolley.
At the exit, she helped open one door for the trolley to go past while looking at something in her hands. The trolley was too wide to go through however, and the lady needed to open the other door for the trolley to get through. On his part, her partner just stood behind the trolley, wordless, waiting for the lady to open the other door.
They stood there for awhile actually, the man behind the trolley staring at the lady expectantly and the lady holding one of the two doors open. At some point I realised that he lady must have figured out what her partner wanted her to do, but wanted him to open his mouth to ask instead of waiting for her expectantly. A silent "tug of wills" was going on - the man waiting for her to open the other door without him asking and the lady waiting for him to say something while she was reading her book.
In the end, the man turned the trolley around and suggested to eat somewhere else. The lady let go of the door and followed behind, accepting this "compromise".