"matapee" means: A yuca strainer or press (sebucan) in the form of a tube of basketry hung from a hook and compressed by stretching the lower end with a pole.... 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.