ejac-u-beam Share definition Flag A sporadic discharging of heatvision, brought on by sexual fantasies and/or watching animals copulate. "HAHAHA!!!! Did you see it, the ejac-u-beam??" ejac-u-beam by Macky T. July 16, 2003 0 0 Get merch Get the ejac-u-beam mug. Buy Now — $32.95 See more merch