Well the first thing I noticed was the unusual pallor on the two children.
Then a young man further back on the bus seemed to have an oddly shaped mouth that extended on the left side almost to his ear in a somewhat grotesque manner.
I tried to get a good look sideways without staring and slowly realized that at least three people on the bus were made up as for an amateur dramatics horror show.
Nobody paid any attention, of course.
They got off at the same stop as me, and I was careful to to brush against their arms - I didn't want grease-paint on my jacket.
They got the tram, I got the Autocool car to take Catrin to the airport.
Then later I read this.