For example, if someone was really sadistic and conniving, someone could design a computer program to socialize in your social circles and cast you out based on some simple premises:
1) People don't have indefinite memories.
2) People don't think to indefinite orders of logic.
3) It's cool to be stupid and politically correct to play dumb. At the very least, people enjoy teasing those who try hard.
Ergo, as long as the program learned general syntax and continually updated associates' particular tastes (i.e. food, clothes, holidays, music, jobs, etc.), the program could eventually make you look inferior.
Even humor can be simulated. You just have to quantify absurdity and hierarchy to make people feel anxious, and have enough experience to say stuff others are partially unfamiliar with.