Massachusetts General Laws Part I. Administration of the Government (Ch. 1-182) Ch. 138, § 34E

(a) A person under 21 years of age who, in good faith, seeks medical assistance for someone experiencing alcohol-related incapacitation shall not be charged or prosecuted under sections 34, 34A or 34C if the evidence for the charge of purchase or possession of alcohol was gained as a result of seeking medical assistance.

(b) A person under 21 years of age who experiences alcohol-related incapacitation and is in need of medical assistance and, in good faith, seeks such medical assistance or is the subject of such a good faith request for medical assistance shall not be charged or prosecuted under sections 34, 34A or 34C if the evidence for the charge of purchase or possession of alcohol was gained as a result of seeking medical assistance.