In my mind I make up little stories for everyone, say there's a guy sleeping on the Train, I would think
'Bobby had just come home from work, back to a loving wife, but because he had worked over time, he was very tired, without anyone to wake him up as he fell to sleep on the Train, he missed his stop. His wife tried to call him to see if he was okay, as she wasn't aware of the over time, but Bobbys phone was dead, she instinctivly called the police to form a search party..."
And I would do it until I, or he, got off the train.
I also have an inner monolouge for when I'm on my own.
And to answer the question, yes I have. Half a day I was like
"Butters drank Rockstar, +10 energy"
"Butters stayed awake during class, +5 Intelligence"
And thats because I play Persona (3 and 4) and I used to roleplay with my friends, so I got used to adding + whatever stat when we were doing stuff.