Someone or an animal (mag-) behaves foolishly, mischieviously, or unpredictably as a tired carabao that charges its owner or someone under the influence of drugs becomes violent.
Maglōko danaw nwang ko, ta nahopag.
My carabao behaves unpredictably, because it is tired.
Someone (mang-) causes someone (-en) mischief.
-en kwen
mangloklōko 'habitually mischievious'
Manglōko anak mo so rarayay na adekey.
Your child causes mischief to his younger companion.