Okla. Stat. tit. 21, § 21-1353: Unlawful intrusion upon lands

Every person who intrudes or squats upon any lot or piece of

land within the bounds of any incorporated city or town without

license or authority from the owner thereof, or who erects or

occupies thereon any hut, hovel, shanty, or other structure whatever

without such license or authority; and every person who places,

erects or occupies within the bounds of any street or avenue of such

city or town, any hut, hovel, shanty or other structure whatever, is

guilty of a misdemeanor.