In this quote from James Patterson's book "Saving the World and Other Extreme Sports," the speaker describes their personality as having only two possible modes: being hostile or acting as a smart-aleck. It suggests a straightforward, possibly defensive attitude where the individual switches between these two extremes depending on the situation.
The quote highlights a tendency for the person to respond either with aggression or sarcasm, implying a lack of middle ground or gentle approach. It reflects a humorous and candid self-awareness about their quick-to-react nature, emphasizing the choice they present to others in social interactions.