"absofuckinglutely mode" means: A headspace of total, unfiltered commitment — when someone is operating with zero hesitation or self-doubt, going all in on whatever they ar.... This is a fairly neutral word with no inherent risk attached. There is no real cause for parental concern; it is descriptive vocabulary rather than something dangerous. If your child uses it, context will usually make the meaning clear. A brief, curious question about where they heard it is generally enough to know whether to follow up.