It's pretty simple. Make up replies that Tony would say to something in an everyday situation, in battle, at parties, etc. Examples: Enemy: "Any witty comebacks, Mr. Stark?" *sonic booms fill the air, and several of Tony's Mark suits come flying in one by one* Tony: "Oh...about forty." "Let's see a swiss army knife do this!" (shoots a drone)"Tag, you're it." (referring to his weaponry) "Mine's bigger."