Cincinnati A-Bomb Share definition Flag When in the standing 69 position, the guy (holding the girl) ejaculates and immediately drops her on her head. John broke Tina's neck when he pulled a Cincinnati A-Bomb on her last night. Cincinnati A-Bomb by Stan Dup December 24, 2007 0 0 Get merch Get the Cincinnati A-Bomb mug. Buy Now — $32.95 See more merch