devil's threesome
noun1
Slang Sexual intercourse between one woman and two men.
- Before she could reply, he added hastily, “As long as it's not a devil's threesome.” […] “A devil's threesome?”, she asked pointedly. “Let me guess, is that two guys and one girl?” Mason shuddered again and made a face. He nodded.2014, J.K. Norry, Demons & Angels: Walking Between Worlds, Book I, Sudden Insight Publishing, →ISBN, page 95: