Give compliments in a way that sounds like an insult. Example: "You're actually smarter than you look." It disorients their ego—now they chase your approval.
Casually call them the wrong name, then correct yourself like it's no big deal. They'll feel devalued, like you don't care to remember. Instant ego check. Instant psychological edge.
Say something cryptic like: "People never really know what others are capable of." Then act like you didn't mean anything. It seeds fear—and they'll start watching you differently.
Reveal something that seems personal... but isn't. They'll open up more than you did, thinking it's mutual. You gain intel; they gain illusion.
When someone confronts you, don't defend yourself. Just stare... and say: "Why are you so emotional about this?" Now they're explaining their own anger, and you've flipped the power.