"aggieland check" means: A moment of pausing to verify whether someone or something is authentically rooted in Aggieland values — the loyalty, the traditions, the un.... 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.