Devil's Cueball
A sexual act wherein a gentleman receives oral sex from a lady, whilst he is standing and she is kneeling before him. Throughout the act of fellatio, the gentleman shaves the hair off the head of the lady (electric clippers preferred, but not mandatory) until she is bald. When reaching climax, the gentleman then ejaculates onto the head of the lady, in as even a distribution as possible.
"You know that girl from accounting that's been wearing a hat all week? She doesn't have cancer, dude. I just gave her a Devil's Cueball last weekend."