Ace maxxing means: Pushing for flawless, top-tier performance in everything - optimizing habits, skills, and output with the goal of becoming the best at whatever you're doing. Grind-culture meets perfectionism.. There is no real cause for parental concern; it is descriptive vocabulary rather than risky behaviour. If your teen uses it, context will usually make the intent clear. A short, curious question about where they heard it is usually all that is needed to know whether to follow up.