"EIR" means: : a report issued by the U.S. Food and Drug Administration following the inspection of a facility where goods under the authority of the age.... There is a drug-related reference, so this is one worth noticing without overreacting. Many teens encounter such vocabulary through music, film and friends without any direct involvement. A neutral, curious conversation about where they heard the term and what they understand by it is far more useful than a confrontation. Watch for repeated context, not a single word.