Culadhammasamadanasutta 5.2

5.2

Idha, bhikkhave, ekacco acelako hoti muttācāro hatthāpalekhano, naehibhaddantiko, natiṭṭhabhaddantiko, nābhihaṭaṃ, na uddissakataṃ, na nimantanaṃ sādiyati,

It’s when someone goes naked, ignoring conventions. They lick their hands, and don’t come or wait when called. They don’t consent to food brought to them, or food prepared on their behalf, or an invitation for a meal.