a particular traffic light that is usually red every time i encounter it, irritates me to the point that i am already angry at it before i round the bend and receive the data as to whether it is red or not.
it almost always is red, and i am pessimistic (by default) about the prospects of it being green for me, and i develop a negative attitude when i remember it which is about 500 meters before i get to it.
at that point i have not yet seen it, but the damage is done anyway.
today, the light was green, and i was quite pleasantly surprised and relieved that i did not have to experience the "double whammy" of both an "actual" red light, as well as my already experienced experience of an "expected" red light.
anyway i was quite chirpy in my mind for a while (it was a reasonable distance to the next set of traffic lights), but then i saw to my horror that a car was broken down in the lane that i needed to be in to turn left, and i got squashed into a compression of merging cars, and i was held up for about the same amount of time as i am usually held up by the previous green light.
as i drove past her car i thought "you b***h! you robbed me of my 'green light windfall'. it would have been easier for you to have just ran back there and pressed the pedestrian crossing button than to disable your car to achieve it".
then as i drove off into the road i turned into, i started to laugh to an extreme degree because i became aware of a certain absurd aspect of the whole situation, and i found it inescapably humorous.
so, even though i was robbed of my green light, i was payed back with hilarity later on.