Absofreakinglutely maxxing means: The act of pushing enthusiasm, agreement, or positivity to its absolute upper limit - saying yes to everything and optimizing for maximum hype output. Someone who is absofreakinglutely maxxing. 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.