When my children were small they enjoyed watching airplanes, like most kids do, and whenever we saw one we would stop and point at it. One day, after leaving the kids at nursery school, I was standing at the bus stop (at rush hours ) when I noticed an airplane. With a loud clear voice I said "Look an airplane" and at the same time I pointed at it. Some people looked at me in a very strange way, others just nodded friendly and said: yes, it´s an airplane - that´s when I realised I didn´t have the kids with me
Luckily the bus came soon after so I could go and hide at the back