Resistentialism is a jocular theory to describe “seemingly spiteful behavior manifested by inanimate objects.” For example, objects that cause problems (like lost keys or a fleeing bouncy ball) exhibit a high degree of malice toward humans and lend support to resistentialist beliefs.
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.