dabble in the dark arts
When your family has a secret that involves your great-grandma having a baby with a black guy and nobody talks about it.
My family's been hiding that dark art for generations. I'm half black and nobody knows.
She told me about the dark arts. I'm like, 'You're telling me my grandma had a secret baby?}'
That's why I'm so weird. My family's been dabbling in the dark arts since the 1800s.