Monoballer Share definition Flag A human male with the ability to fire ejaculate from one testicle per sexual climax, thereby allowing for shorter intervals between climaxes. It's okay baby, I'm a monoballer. We can go again right now. Monoballer by JBazzz April 17, 2008 0 0 Get merch Get the Monoballer mug. Buy Now — $32.95 See more merch