Use "prankish" in a sentence

1. If a boy, in a prankish mood, angry at being forced to eat his Brussels sprouts, should take one of his sister’s dollies, take its clothes off, and put it with a boy doll, just back from years of combat? And if that boy doll should be in a state…of need…but wait a minute…these are dolls we’re discussing

2. He may have been almost prankish with her so far, but she knew he was a very deadly man, now worst of all she actually felt guilty for her outburst and her demands

3. He hissed, rubbing his curiously bulbous Normals nose where it had cracked hard into the stone, and he turned an accusing glare to where Nightfall stood holding his staff and grinning like some prankish Normals school-boy