"accy energy" means: Accy energy is the particular reckless optimism of someone who genuinely believes stacking long-odds bets into a single slip is a viable fin.... 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.