Wonder if it is a Devil's Food cake?
I would never advocate doing Voodoo for real, but a "Voodoo" cake would be the perfect thing to serve a friend who has someone in their life that made them miserable to take out their mental anguish on, then enjoy a delicious dessert to perk up their spirits.
You can DIY your own with a free tutorial posted on Cut Out and Keep (link below) where the author of the book
Twisted Cakes: Deliciously Evil Designs for Every Occasion by Debbie Goard has shared this sample project from her book.
See Voodoo Cake and 1000's of others - or share your own on Cut Out + Keep
Disclosure: I am a non-paid contributing member of Cut Out and Keep, a free online craft tutorial site that anyone can join. I have no affiliation with the author of the book or Amazon, I just think this is cool:)