I work in a very posh area of London but live in a grottier bit. I finished work one day last week and was getting on bus with ds in pushchair and was followed on by a lady, also with small child in pushchair (which was big and shiny). The lady appeared to be quite well to do and looked quite posh. Anyway about ten minutes into the journey she picked her small son out of the pushchair and sat with him the window (not unusual).
What happened next was, IMO unusual. She burst into a rendition of 'day-oh, morning come and me want to go home' complete with finger clicking and hand actions. All other passengers and small children were quite shocked. She had a quite posh 'churchy' singing voice, which I felt, added a new twist to the song. It was pretty loud.
So aibu in thinking no-one behaves like this really and it must have been a wind up for the telly. It was a bit awkward to say the least.