Okla. Stat. tit. 21, § 1215
It shall be unlawful for any person under the age of twenty-one years to be in the possession of any intoxicating beverage containing more than three and two-tenths percent (3.2%) alcohol by weight while such person is upon any public street, road, or highway or in any public building or place.
Laws 1963, HB 817, c. 213, § 1, emerg. eff. June 11, 1963.