Hello, and please excuse an ATCO's intrusion upon such a fine forum...
One day, some few years ago, I was SLF waiting in the dep lounge at an airport whose name I will not disclose (because it could be anywhere, really) in the UK, just quietly reading a book.
After a short amount of time, I became aware of a wee lad (maybe 5yo? ish) who expressed great and enthusiastic interest in everything he could see from the window. The comment I caught was this:
"Daddy, Daddy, what's that?" (much pointing accompanied the question.)
"What, son? Oh, that! That's how they put the petrol in."
Little boy was pointing at the Tug tow-bar.
I declined to comment, on the grounds that I was doing my best not to draw attention to myself, and thereby risk being temporarily committed. It wouldn't do my career much good