Resistentialism is a humorous theory to describe "seemingly spiteful behavior manifested by inanimate objects." In other words, a war is being fought between humans and inanimate objects, and all the little annoyances objects give people throughout the day are battles between the two.
The term was coined by humorist Paul Jennings in a piece titled "Report on Resistentialism", published in The Spectator in 1948 and reprinted in The New York Times.
The slogan of Resistentialism is "Les choses sont contre nous" -- "Things are against us"
Cases of Resistentialism:
Missing car keys: they have moved of their own accord and by means quite unobservable in order to spite you... Resistentialism!
When a bouncy ball escapes down the road: it may seem innocent but the ball knows all too well that the centre of the spectacle is that poor chap grasping helplessly in its wake... Resistentialism!