Incest stepmother without panties

I married my current husband five years ago. He has a son named Takashi, and he also started living with him. But Takashi is a very mischievous child and is making trouble every day. Moreover, the pranks gradually escalated, and today when I woke up after taking a bath, all my panties were gone. I can't wear pants, and I'm alone at home with Takashi. I'm feeling anxious now...