How can an idiot make your day

I was taking a subway on my way to school last week and I was in situation when I didn't know if I should smile or I should be upset.I was trying to get out of the train an the guy behind my back have pushed me out. When I asked him what is wrong with him ,he started to curse me with names.The people around had fun and me too.I was in good mood so, I have asked him if he just reached his climax of the day and I have kept walking to the school. I was suprised how can some people even idiots like this guy make my day.I came to class and I pass my test with 100% score. Now, I always be looking for this guy before my next test.